How to change the radiator of a Priora stove without air conditioning

Symptoms of a problem

The Lada 2170 model received a liquid heater, which is connected to the engine cooling system. The radiator is a heat exchange device; due to this component, the air entering the Priora’s cabin is heated. Coolant constantly circulates through the radiator; this part of the heater is subject to wear.

It is worth checking the radiator in the following cases:

• The stove stopped heating properly.
• The coolant level drops.

Once you disassemble part of the heater system, you will see a rusty and most likely leaking radiator. There may also be leaks in hoses, pipes and the junctions of these elements. You should check the heat exchanger of the stove only after you have made sure that there are no defects in the operation of the gearmotor and damper.

Radiator malfunctions and their consequences

A broken device poses a great danger to the entire cooling system, since its instability can lead to overheating of the power plant. The Lada Priora uses a standard combined cooling system, when the liquid system is supplemented by an air system. Thanks to this combination, it is possible to more effectively maintain the optimal engine temperature under various loads and operating modes.

There are not many malfunctions of this element as such. The main problem with the radiator is the occurrence of coolant leakage. This happens due to a violation of the integrity of the tubes caused by damage to the radiator. Another common problem is clogging of its inner surface. This can be determined due to the constant operation of the forced cooling fan.

The temperature drops, but rises quickly and causes the ventilation unit to turn on again, even when driving at high speed. This is due to the fact that the oncoming air flow cannot cool the coolant due to dirty plates. Contaminants can also be deposited on the inner walls of the radiator tubes, which will impede the circulation of antifreeze. And, as a result, the engine will begin to heat up excessively.

When the device is broken, the power unit overheats.

Causes of malfunctions

The main factors causing problems with the radiator are the following:

• wear of elements of a natural nature (any part sooner or later wears out and fails);
• mechanical impacts leading to damage and deformation;
• operating the engine in violation of the manufacturer's requirements and recommendations.

Breakdown can be caused, among other things, by the use of low-quality coolant, mixing antifreeze with other types of antifreeze, and the use of all kinds of sealants that can clog the pipes and affect the circulation of the coolant (coolant). At the same time, the human factor cannot be ignored when, due to incompetence in matters of radiator maintenance and repair, a part has to be replaced.

Often, simple dirt and poplar fluff that clog the plates can cause the engine to heat up. Due to systematic overheating, the fuel in the cylinders begins to detonate due to the increased temperature of the coolant. As a result, the cylinder head burns out, the block itself becomes deformed from high temperatures, and cracks appear. And ultimately, the destruction of the piston group and crank mechanism completes the picture. It's not far from a major, expensive engine overhaul.

You need to carefully monitor the condition of the cooling system and the radiator in particular.

Signs of trouble

Even a beginner can determine that there are some problems with the radiator. This does not require special knowledge. It is enough to understand in general terms the principle of operation of the cooling system of the Lada Priora.

Troubleshooting

Symptoms	What are they related to?
On the instrument panel, the arrow of the coolant temperature indicator constantly approaches the red zone.	This provokes the inclusion of forced cooling and indicates engine overheating.
Constant overheating can also be determined by the deposit on the spark plugs.	During normal engine operation, the coating is sand-colored; when overheated, it is white.
It is necessary to carefully monitor the level of coolant in the expansion tank.	A sharp or gradual decrease in level will indicate the presence of a leak, which may be associated with a leak in the radiator.

Low coolant levels will also lead to rapid overheating. It is easy to find a leak by characteristic smudges on the surface, as well as by the presence of antifreeze or antifreeze where the car is parked.

Causes of heater failure

There can be a huge number of reasons, but there are several main ones. These include leaks and clogged heater radiators. Let's take a closer look at each.

The radiator is clogged on the outside

When the radiator honeycomb becomes clogged with various debris, its throughput is significantly reduced and it cannot give off heat in the amount necessary for effective heating of the interior.

This happens due to prolonged use of the cabin filter or even neglect of its use.

The radiator is clogged inside

With such a problem, which arises as a result of using low-quality antifreeze or using it for a long time without replacing it, the inside of the radiator becomes clogged. It is for this reason that the coolant does not circulate effectively or does not circulate through the heater radiator at all, which leads to insufficient heating of the heater, thereby complicating the heating of the interior.

Radiator leak

Radiator leaks occur due to many different reasons.

These include:

• Aging;
• Poor quality coolant;
• Corrosion, etc.;

This problem is fraught with the fact that when the radiator leaks profusely, a large amount of coolant is lost, which can lead to engine overheating and, as a result, expensive repairs of the internal combustion engine.

All of the above described causes of radiator malfunction can be eliminated by replacing or flushing it.

Which radiator should I choose, aluminum or copper?

The VAZ 2110 after 2008 was equipped with aluminum radiators, which have a number of pros and cons. However, some car owners complain about cold interiors and foggy windows. Advantages of an aluminum radiator:

• They have a higher density compared to copper
• The width of the radiator channels is larger, which means more heat transfer

Minuses :

• If a leak occurs, it is not repairable
• Heats up quite quickly, but also cools down quickly

Initially, domestic cars were equipped with copper radiators. However, later, as we wrote above, they were replaced with aluminum ones.

Now it is quite difficult to find a high-quality copper radiator, since some manufacturers use impurities instead of pure copper.

Advantages of copper radiators VAZ 2110:

• Among the obvious advantages is its heat dissipation of 389.6 W/(m. deg), it is significantly higher than that of aluminum
• A copper radiator takes a long time to heat up, but also takes a long time to cool down.
• If it leaks, it can be repaired.
• The copper radiator can be soldered.

Minuses:

This type of radiator has fewer fins and thin channels that can become clogged.

Radiator replacement

To work, you will need a standard set of tools, which includes socket wrenches 10 and 13, side cutters, a Phillips screwdriver, and a wrench 8. In both cases, you will have to disconnect the heating system hoses; the remaining coolant will pour out of them, so immediately place containers under the pipes heater Then the liquid can be returned to the system.

With air conditioning

1. First of all, we need to remove the rubber seal of the windshield to gain access to the parts; Remove the windshield trim to gain access to the heater system parts
2. Let's move on to soundproofing the engine shield. We need to dismantle its middle part, having previously removed the hoses from the mounts. The sound insulation is secured at the bottom with 3 screws, 2 nuts and a washer, and at the top with 3 self-tapping screws. It is recommended to use a tool extension as some fasteners may be difficult to reach; Removing the fastenings
3. After dismantling the protection, you will see a foam seal that covers the heater radiator; Remove the trim and move on to soundproofing the engine
4. To remove the cover, we need to unscrew 3 screws - 1 you will find in the middle, and 2 others - along the edges; Unscrew the fasteners and gain access to the radiator
5. We reached the pipes. To remove them, we need to loosen the clamps and lift the pipes up. Be careful not to tilt the hoses down;
6. Pull the heater core towards you until it comes out of the fastenings.

As you can see, dismantling the radiator in a Priora with air conditioning does not require draining the antifreeze. Coolant will only come out of the expansion tank and the heat exchanger itself. Removing the radiator in a VAZ 2170 with Panasonic air conditioning follows the same scheme, only a few fasteners may differ. Now you can replace your worn-out heater with a new one!

Without air conditioning

1. Work begins by disconnecting the negative terminal of the battery. We remove the windshield trim along with the windshield wiper arms, as these elements will interfere with operation;
2. The next step is to remove the coolant supply pipes to the engine injectors;
3. The windshield trim is held in place by seven screws. Unscrew it to completely remove the element;
4. Now we move on to the hood seal, in its center you will find a tightening screw - unscrew it;
5. The engine noise insulation closes the passage to the heater system - pry up the plugs with a flat screwdriver and unscrew the plugs;
6. We unscrew the screws and dismantle the sound insulation. Remove both covers; We remove both parts and go to the interior to dismantle the radiator
7. Let's move on to the radiator pipes. We loosen the clamps and dismantle them, having prepared a container for antifreeze in advance. Plug the pipes so as not to drain all the antifreeze;
8. You need to remove all the wiring that goes to the stove;
9. Next, remove the wire holder and take it to the side, now we go to the Priora’s interior;
10. Armed with a 13mm wrench, unscrew the bracket fastenings along with the brake pedal. We move the details to the side;
11. We unscrew 3 screws and gain access to the radiator;
12. Replacement is carried out in reverse order.

Clean the heat exchanger and inspect it for damage. If cracks are found on the plastic elements, then you will no longer be able to repair the part - only replacing the stove radiator on a Priora, which is done in the reverse order, will help here.

Replacement option for a car without air conditioning

The replacement of the radiator of the Priora stove without air conditioning begins with zeroing the negative terminal of the battery. Then the windshield trim is removed along with the wiper seats to facilitate the work process. The further operation is performed in stages:

• The tubes supplying the refrigerant to the injectors are removed.
• The cover is removed by unscrewing seven screws.
• The tightening element on the hood seal is unscrewed.
• The flat plugs on the engine sound insulation are pryed off and turned out.
• The insulating elements are removed along with the linings.
• The clamps on the radiator pipes are loosened and removed. You will need to prepare a container for draining the antifreeze.
• The wiring connected to the heater is removed.
• The wire holder is removed and moved to the side.

How to replace a stove radiator yourself without an air conditioner

What will be needed for replacement? First of all, the following tools:

• Screwdrivers, figured and flat.
• Wrenches for 8 and 10. (preferably heads with a wrench.)
• Thin pliers for removing clamps.

And, of course, some materials and devices:

1. Container for coolant from the system.
2. New radiator.
3. Foam rubber adhesive strips for the radiator of the Priora stove.
4. 2 liters of coolant. (same brand as in the system.)
5. Rags.

Having prepared such an arsenal, you can begin this interesting operation of replacing the heat exchanger.

Process description

Place the car level. This is necessary to completely drain the coolant from the radiator of the Priora stove. Place a container for liquid under the bottom of the car. It must be installed in the area of ​​the radiator drain hole of the cooling system. On the right side (along the direction of the car, or on the left, if you stand near the hood). Next you need:

1. Unscrew the screw cap and allow the liquid to drain. When the pressure weakens, open the cap of the expansion tank. Wait for the drain to drain and tighten the plug. Disconnect the negative battery terminal. You can begin dismantling the protection. It's called frill.
2. First, the windshield wipers are removed. Using a 13mm wrench, unscrew the fastening nuts and remove the brush holders. After this, remove the rubber seal.
3. Unscrew the fastening screws. There are 6 of them on top and 7 along the bottom edge. Now remove both halves of the plastic frill. After unscrewing the fasteners, remove the fabric protection of the glass niche in which the stove is installed.

Now comes the most crucial moment. Most craftsmen, when replacing this part, immediately disconnect the pipes going to the radiator of the Priora stove. However, there is a risk of dousing the heater parts with coolant. There is a more interesting and safer option.

Removing the stove

Now that the frill and protection have been removed, access to the heater is completely open. First of all, you need to disconnect the electrical connectors:

• Micromotor gearbox for damper drive. 2 connectors.
• Electric fan. 1 connector.
• Resistor. 1 connector.

Now unscrew the fastening of the heater body to the car body.
One 10mm nut secures the eye on the stove body to the right wing. 8 secures the top to the stud at the top. And two nuts at the bottom. Once the fasteners are removed, the fun begins. Using a flat screwdriver, remove the 3 screws securing the radiator to the body. You need to act carefully so as not to break off the side, thin pressure relief pipe. After that, remove the screws holding the 2 parts of the heater housing. Move the left part with the fan motor a little to the left, disconnecting them, and pull it out.

After this, you can begin to remove the second half with the radiator. Hold the pipes with your hand and begin to remove the body to the left. When it comes off, set it aside. After releasing the clamps from the pipes, remove them from the radiator.

Installation (replacement) of a new radiator

There are two options here. You can simply replace it by putting the part in place of the old one, before installing the housing. But it is better to install the radiator in the removed half before attaching the pipes.

Having decorated the heat exchanger of the stove with foam, install it in the niche of the housing and secure it with screws. Place the half in place and secure all 3 pipes in place. Tighten the clamps.

Carefully reassemble the heater in reverse order. Add coolant to normal level. Start the engine and wait for the cooling fan to operate. Press the accelerator pedal and hold the speed at about 2,000 rpm for a couple of minutes. This is necessary to eliminate a possible air lock. Turn on the heater and check its operation in all modes. All! Well, the necessary work has been done.

Video on the topic of replacing the heater radiator on a Priora without air conditioning.

Withdrawal procedure

1. Disconnect the negative cable from the battery.
2. Remove the windshield trim frame. We remove the soundproofing upholstery of the engine compartment.

3. 
   Loosen the clamps...

4. ...Disconnect the hoses from the heater radiator pipes. This will cause some coolant to flow out of the hoses. Plug the radiator pipes and hoses after disconnecting.
5. We release the latch...
6. Disconnect the heater fan wiring harness block.
7. Disconnect the wires from the additional resistor.
8. We cut the clamp securing the wiring harness to the heater
9. Disconnect the wires from the micromotor gearbox of the heater damper drive.
10. Using a 10mm socket wrench, unscrew the 3 nuts and use a 8mm socket wrench to unscrew the heater mounting screw.
11. Remove and move aside the wiring harness holder along with the wires.
12. Using a 13mm wrench under the instrument panel, unscrew the 4 nuts securing the brake pedal bracket and move the assembly to the left.
13. We remove the heater from the car.
14. We unscrew the 3 fastening screws connecting the parts of the heater housing.
15. We disconnect the heater housing.
16. We remove the left one from the car first,
17. And then the right side of the heater housing.
18. Reinstall the heater in reverse order.
19. After installation, check the coolant level.

Video on the topic:

Replacing the engine cooling radiator on a Lada Priora

Normal operation of a car heater provides the driver and passengers with a comfortable ride in the cold season. But sometimes the car’s heating fails, for example, the heater radiator may leak, and the freezing driver takes longer to react to sudden changes in road conditions.

Using the Lada Priora as an example, we will consider a way to independently solve this problem. Such repairs can be done in the garage yourself, although at first it may scare away less experienced car enthusiasts.

Difficulty of choice

If it has become noticeably cold inside the car, it is worth checking the car's heating system. Most likely, the problem will be detected in the heater radiator and you will soon have to buy a new one.

The Internet is full of advertisements for the sale of heater radiators for Lada Priora, but how to choose a quality product and not “run into” a fake?

The first thing that should indicate the originality of a part is its price. High-quality spare parts cannot be cheap; manufacturers of original radiators will not allow this.

Second. The original radiator of the car heating system has small cells, i.e. the distance between the vertical slats is minimal, only factory equipment can provide this. Factory equipment “works” only with high-quality metal; the honeycombs should not be too soft.

Manufacturers of counterfeit products save on small things; they do not install “liquid swirlers” in counterfeit radiators, plastic parts that increase the heat transfer of the coolant in the radiator of the heating system. To check their presence, you should shake the part; a specific sound will indicate their presence or absence. If they are made of soft material, this method is useless.

Once the radiator has been selected, it is time to change it. Replacing an old one or installing a new radiator in a Priora requires certain actions.

Replacing a heater radiator in a Priora without air conditioning

The layout of the Priora heating system is traditional for domestic cars, its main components are:

• radiator (heat exchanger) of the heater, in which the liquid is heated;
• fan - it disperses air heated from the radiator throughout the cabin;
• regulators - with their help, the intensity of the fan operation is changed and the flow of warm air is regulated by zones.

Before the main work, turn off the power to the car, i.e., remove the negative terminal from the battery.

After turning off the power to the car, you can begin to remove the windshield trim. If you are too lazy to dismantle the wiper arms before doing this, certain difficulties will arise in the future. Next, disconnect the tubes (plastic) for supplying washer fluid to the injectors. Now the decorative trim of the windshield can be easily removed, just unscrew the 7 screws that hold it in place. Although this may still be prevented by the hood seal.

Then the next step is to remove the hood seal. At the front, the two sides of the seal are connected together and secured with a screw; it must be unscrewed. Using a flat tool (screwdriver or knife), remove the plugs and unscrew the screws. We remove the seal that may interfere with the removal of the decorative trim, after which it should come off easily.

Everything worked out - we move on and remove the sound insulation of the engine compartment. We unscrew the screws securing it, remove the covers one by one (the order does not matter). Before releasing the clamps that hold the pipes, place a container to drain the coolant; this will save you some money.

The wiring can be removed using keys 8 and 10. Unscrew the 4 nuts and put the harness aside. Using a 13 key, remove the bracket from the brake pedal and move it to the side - the road to the radiator is open. Use a Phillips screwdriver to unscrew the 3 screws and remove the radiator.

Install the heat exchanger, following the completed cycle, but starting from the end. It’s up to you to decide which Lada Priora heater radiator to install, repaired or new.

Alternative option

There is an alternative option to remove the heater radiator; some prefer it. The vacuum booster (brake) is removed, along with the brake pedal. This will allow you to get to the heater (its left side) and to the heater radiator on the Priora.

Replacing the cooling radiator Priora with air conditioning

After a certain period of time after the release of the Lada Priora, the manufacturer began to equip them with climate control units (air conditioners) Panasonic and HALLA. The new heater has become structurally different from the old one, and getting to it has become much easier. To replace the radiator, you no longer need to remove the frill (windshield trim), VUK, wiper holders or heater.

How to remake the stove on a VAZ 2110

The central corrugation from the vacuum cleaner (the inside is smooth, with a diameter of 40 mm, and the other two are ordinary ribbed inside, also 40 mm in diameter) Important: The diameter of the corrugation should not be less than 40 mm, and if the corrugation is long, then it must be smooth inside, otherwise there will be a whistle. In frost below -20, a problem arose: it is impossible to make air flow in all directions simultaneously

And then either your feet freeze or the side windows freeze.

Did you buy a new heater core, but after installing it, you began to notice that the heater doesn’t heat up like before? The fact is that the heat transfer of the old (factory) stove radiator was better, and the new stove radiator (even if it was from a “trusted” company) most likely turned out to be a fake. Do you know how to determine which heater radiator is better right in the store, without installing it in the car?

On the Internet you can find various tests and reviews of radiators that will tell you which manufacturer you should pay attention to when purchasing. But as practice shows, all these tests are in vain, because when buying a stove radiator from a well-known company, you risk in 50% of cases that you will buy a fake, which naturally will not meet your expectations

Therefore, it is important to be able to correctly distinguish the original from the fake, especially when it’s cold winter outside.

So, in order to distinguish an original stove radiator from a fake, you should pay attention to its cost. Usually the price of a good, high-quality heater radiator is within 750 rubles

If its cost is much lower, then you should think about it. Remember, the miser pays twice!

Ask the seller for a certificate and packaging (if the stove radiator is without it). Of course, it is impossible for an untrained buyer to distinguish original packaging from counterfeit packaging, but the lack of a certificate or radiator box is another reason to find a stove radiator elsewhere.

Now about how to choose a stove radiator according to the honeycomb. A good heater core should have honeycombs that are very close to each other. In other words, the smaller the distance between cells, the better. Also try to press a little on the honeycombs with your finger; if, after a little effort, the radiator honeycombs begin to sag - this is a bad sign.

About heater radiator fluid swirlers. Coolant turbulators or swirlers are plastic spirals that increase heat transfer from the radiator when the engine is running at low speeds. As Gennady Krivutsky, leading test engineer of the General Development Department of AvtoVAZ JSC, states: the absence of turbulators in the radiator reduces the efficiency of the heater by 27% at idle, by 17% when driving at a speed of 50.60 km/h, by 5% - at engine speed 5000 rpm. Thus, swirlers serve to increase the heat exchange of antifreeze with the radiator. If there are no swirlers, then the antifreeze “flies” through the radiator without having time to transfer heat, and as a result, the heater in the cabin blows cold air.

How to check if there are swirlers in the heater radiator? Just shake the radiator and hear something rattling inside – that means they are there. However, sometimes the “noodles” (as swirlers are called differently) will not rattle due to the peculiarities of its composition, in which case its presence will have to be determined visually. You are unlikely to be allowed to disassemble the radiator in a store, so we try to shine a flashlight inside the radiator; the swirl rings should be clearly visible.

The set of methods described will allow you to distinguish the original “hot” stove radiator from a fake, but you cannot be 100% sure of the quality of the product. There are known cases when the turbulators inside the radiator are spaced at intervals, or they are not the full length. If you come across such an “under-swirled” radiator, or there are no swirlers at all, do not rush to throw it away, because... There is an opportunity to modify the stove radiator with your own hands! To do this, it is enough to cut aluminum or copper strips 1-1.5 mm thick and 5-6 mm wide (select according to the diameter of the tubes), clamp one end into the drill chuck, fix the other and carefully curl it.

Priora stove diagram

Before changing the stove on a Priora, buy new heater elements using the catalog numbers:

Priora heater 2111-8101012: 1 — heater inlet/outlet hoses 2170-8101200/208; 2 — additional resistor 2123-8118022; 3 — electric fan 2111-8118020; 4 — heater 2111-8101012; 5 — nut 1/07259/11; 6 - screw 1/51873/01

Priora heater parts: 1 - screw 1/76691/01; 2 — heater radiator 2110-8101060; 3 — left heater casing 2111-8101025; 4 — heater control damper 2110-8101538; 5 — right heater casing 2111-8101024; 6 — air duct housing 2111-8119124 intermediate; 7 — screw 1/76692/01; 8 — lower air intake housing 2111-8119026; 9 — bracket 2108-8101110; 10 — bracket 2111-8119102 right; 11 — screw 2114-5325388; 12 — air filter 2111-8122020; 13 — upper air intake housing 2111-8119025; 14 — filter cover 2111-8119116; 15 — screw 1/76702/01; 16 — screw 1/76691/01; 17 — additional resistor 2123-8118022; 18 — screw 2123-6302332; 19 — screw 2114-5325388; 20 — air supply pipe 2123-8118096; 21 — electric fan 2111-8118020 of the heater; 22 — bracket 2108-8101110; 23 — gear motor 2110-8127200 for the heater damper; 24 - screw 1/76691/01

By the way, do you know that the Lada Priora is also equipped with air conditioners (HALLA and Panasonic), so the process of replacing the Priora heater may be slightly different. For example, in order to replace the heater radiator on a Priora with HALLA air conditioning, it is not at all necessary to dismantle the heater assembly.

Removing and replacing the stove

For further work, we will need screwdrivers with Phillips and flat designs, as well as a 10-mm head. Replacing the stove on a Priora is carried out according to the following scheme:

1. Very often, car repair work begins with disconnecting the negative terminal from the battery. Our situation is no exception.
2. We disconnect the fasteners on the wiring harness from the shield. To do this you will need to deal with the clamps.
3. Disconnect the wiring harness from the bracket on the brake pedal.
4. Bend the bracket upwards.
5. Unscrew the tightening on the two clamps with a Phillips screwdriver.
6. Disconnect the hoses from the heater radiator.

• The electric motor, which is responsible for the operation of the fan, has blocks with wires attached to it; they must be disconnected.
• We also disconnect the wire block from the resistor.
• From the heater, unscrew the nut on the right mount and two nuts on the lower mount. For this work you will need a 10mm socket.
• The bracket that secures the wiring harness must be moved to the side.
• The self-tapping screw on the upper heater mount is unscrewed using a Phillips screwdriver.
• The block with wires is disconnected from the micromotor gearbox, and the heater is moved forward.
• We remove the hoses from the pipes on the radiator by reducing the degree of tightening on the clamps.
• It is now possible to remove the Priora stove.

How to replace a Lada Priora radiator heater without air conditioning

First of all, let's look at the main elements of the VAZ-2170 heating system. They are, in particular:

• heater radiator (heat exchanger) – this is where the coolant is heated;
• fan - with its help warm air is supplied to the car interior;
• regulators – heating intensity and heat distribution zones.

The scheme is, in principle, traditional, and there are no particularly complex technical delights here. If you notice that warm air is not flowing into the cabin while the heater is on, you should inspect the entire system. If a radiator leak is detected, the latter will have to be removed either in order to be soldered, or to be replaced with a new one. Let's look at how this procedure can be done with your own hands on a Priora without air conditioning.

The first thing that is recommended to do before starting the main work is to remove the negative terminal from the battery.

Do not neglect this advice, because it is, firstly, about your safety, and secondly, it is additional insurance against a number of different unpleasant surprises with wiring and electrical equipment.

After the car is de-energized, you can remove the windshield trim.
It will also be necessary to dismantle the wiper arms, since they will create additional inconvenience during operation. Together with them, we also disconnect the plastic tubes through which liquid from the windshield washer reservoir is supplied to the nozzles. Now you can proceed to removing the decorative trim of the windshield. This is not difficult to do - it is attached using 7 self-tapping screws, respectively, they should be unscrewed. First you will need to remove the hood seal. Please note that in the middle of the pad there is a screw with which the halves are pulled together. After this, use a screwdriver or knife to carefully pry up the plugs covering the screws and unscrew them. That's it - the cover can be removed.

If everything went well, then you can move on. At this stage, you should remove the sound insulation from the engine compartment. To do this, unscrew the screws with which it is actually attached, and then remove the lining, left and right (the order does not matter). After this, you can move on to the pipes leading directly to the radiator. In order to remove them, you will first need to loosen the retaining clamps. Place a container to drain the coolant first.

Now you can remove all the wires that lead to the heater from the connectors. Having disconnected them, take two keys - 10 and 8 - and unscrew the 4 nuts. The wiring harness should be moved to the side so that it does not interfere, after first removing the holder. After this, we move into the car interior and take a socket wrench size 13. With its help, remove the bracket from the brake pedal, and

move it to the side. That's all - you have free access to the heater radiator. In order to remove it, you need to unscrew 3 screws using a Phillips screwdriver, after which the unit can be easily removed. All work on installing the radiator is carried out in reverse order.

As you can see, there is really nothing particularly difficult here. In order to remove the heater radiator on a Priora without air conditioning yourself, you will need some time (it all depends on your skills) and a minimum set of tools. On the other hand, you save money because you do all the work yourself, rather than turning to specialists at a car service center. Even if you have never encountered this before, figuring out how to remove the Priora radiator will not be difficult. The eyes, as you know, are afraid, while the hands do. It’s probably worth listening to folk wisdom.

Changing the cabin filter

There are Lada Priora configurations that include air conditioning. It could be HALLA or Panasonic. Owners of such cars are also concerned about replacing the stove on a Priora with air conditioning. But first, it’s worth understanding the air conditioners themselves, which differ not only in the country of manufacture.

HALLA is made in Korea and Panasonic is made in Taiwan. You can find out which air conditioner is installed in your car by visual inspection.

Attention should be paid to the button, which is located in the center of the air conditioner control panel. Panasonic system has a button to turn on, but HALLA does not have such a button

Car owners should regularly change the filter to ensure that the cabin is free of foreign odors from the street and the air is clean. Before you find out how to change the heater filter on a Priora, you need to know the type of system that is installed in your vehicle. After all, each cooling system model has different filter elements.

The filter changes differently depending on whether the car has air conditioning or not. If the car is not equipped with an air conditioning mechanism, then proceed as follows:

1. Open the hood.
2. We dismantle the grill installed under the glass on the left. There are screws on it, closed with plugs. They need to be unscrewed. After completing this step, access to the filter will be freed.
3. The cleaning component cover is held in place by four bolts that must be removed.
4. We remove the cover, which will allow us to get the filter. We clean the vacated area from possible contamination and debris.
5. We install a new filter element and assemble the car in the reverse order.

If the car has a cooling mechanism, the actions will be slightly different.

1. Open the hood and find the required part.
2. We bend the upholstery material.
3. If Panasonic is installed, then the latch on the filter element must be unscrewed. With a Hull cooler, you will need to press the latch, which will open the lid.
4. We take out a filter that has already served its purpose and in its place we put a new one, which will need to be twisted using the slots in the housing.
5. We install the cover and all parts in their place.

Repairing the Priora stove may be associated with a number of problems that initially need to be correctly diagnosed. We will write several more articles on this topic and consider the main problems in detail. In any case, you need to know how to disassemble the stove on a Priora, because this is the basis.

Replacing the radiator of a heating unit in a Priora that is not equipped with air conditioning

Replacing the heater radiator on a Priora without air conditioning may make sense if warm air has stopped flowing into the cabin, while the heater itself is working. If, in addition to the above problem, there is also a water leak from under the Priora stove, the motorist will have to remove the poorly functioning unit in order to solder the latter. Sometimes repairs are impractical and you have to replace the old device with a new one.

So, first of all, you need to start by removing the negative terminal from the battery. The fact is that the issue here is not only about the safety of the master himself, but also about additional insurance, which allows him to avoid several unpleasant surprises that, if handled carelessly, can arise not only with wiring, but also with electrical equipment.

If you are replacing the heater radiator on a Priora without air conditioning, after de-energizing the system, you can begin to dismantle the windshield trim. At the same time, the wiper levers, which can cause future discomfort during operation, should also be removed. After this, you should rid the unit of all plastic tubes through which the liquid located in the windshield washer reservoir goes directly to the nozzles. Only after all the above steps have been completed will it be possible to remove the decorative trim located along the edges of the windshield. In fact, it’s easy to carry out such a manipulation - just get rid of seven self-tapping screws.

Replacing the heater radiator on a Priora can only be done after removing the hood seal. Before dismantling, it should be noted that in the middle of the lining there is a screw that tightens both halves of the structure. Using a screwdriver or any knife, you can gently lift the plugs (this element serves as the “cover” of the screw) and unscrew them.

After this, you can begin to remove the sound insulation, which is located in the power unit compartment. To do everything correctly, you will have to unscrew the screws and remove the pads (there is no clear rule about which of them to remove first: left or right). Then you should get rid of the pipes that go directly to the radiator. A person who wants to understand how to get to the heater radiator on a Priora must loosen the clamps holding the structure itself.

After this, you can remove all the wires going directly to the stove from the connectors. You can remove them using two keys, in particular, one “10” and the other “8”. After unscrewing all four nuts, move the wiring harness to the side, which is held by the holder. The “13” key will help to dismantle the bracket located on the brake pedal. Only after this can you begin to remove the heater radiator on a Priora that does not have air conditioning. A regular Phillips screwdriver will help you dismantle the device, allowing you to remove 3 screws. All the rest of the work consists of installing a new unit and reassembling the system in the reverse order of the described actions.

In fact, there is another way to replace the system element of interest. To open free access to this element, dismantling not the stove body, but the vacuum brake booster will help. It is worth noting that this procedure will only be successful if the brake pedal is removed along with it. Such actions help to get closer directly to the left side of the stove and the desired device.

Fan doesn't work

But sometimes another problem occurs with the Priora stove. The driver turns the heater switch, and in response there is silence. The electric motor is not working. What is the reason. There may be several of them:

1. The fan motor burned out.
2. The heater control unit has failed.
3. The fan speed resistor has burned out.
4. Broken electrical wiring.

The easiest way to determine if a resistor is broken. In this case, only the maximum speed is turned on, and the stove does not respond to other positions of the handle.

The control unit is checked either by computer diagnostics or by a simple replacement. There are no other options.

The condition of the electric motor can be determined by checking with a test lamp. It is enough to remove the top frill and gain access to the motor connector. Disconnect this connector and insert a test lamp instead of the chip going to the fan. When you turn on the stove handle, the light should light up if the unit and wiring are working properly. If there is no signal, start checking the wires sequentially. If the lamp lights up, replace the electric motor.

Replacing the motor

Although Hallo and Panasonic fan electric motors differ in size and installation point, they have one thing in common. Their location is in a vertical position. This allows you to dismantle them without removing the entire heater. As with a standard heater, the heater fan motor on a Priora with air conditioning is secured with 3 screws.

So, replacement. As in the case of a radiator, first of all you need to open access to the stove. That is, remove the frill and protection. Then disconnect the electrical connector. Now just unscrew the 3 fastening screws and remove the fan with the motor. That's it, you can install a new unit in its place. But this is only for the Hallo heater. With the Panasonic compressor, everything is somewhat more complicated. The fact is that it is also separated from the engine compartment by a plastic casing. According to factory documentation, it is necessary to remove the entire heater to replace the electric motor. And this is draining and refilling freon. But our craftsmen found a way out.

Cut the protection at the narrowest point approximately in the middle of the compartment and remove it by unscrewing 2 fasteners. After this, access to the part being replaced is open. Sometimes, however, in most cases, the engine mount prevents you from pulling out the motor. Don't panic. This problem can be solved by disassembling the motor on site. That is, separate it into 2 halves and pull them out separately. Then insert a new one using the same method.

But still, just in case, before replacement, it is better to consult with car service specialists in advance about possible refilling of the air conditioner with freon in case of damage. This is to replace the motor. But with a radiator, such problems, as a rule, do not happen.

Installation of a new radiator in a Lada Priora with air conditioning

Replacing the heater radiator in a Priora car with air conditioning is a fairly simple process. The latter unit appeared only in newer cars, in particular, Priors began to be equipped with a HALLA or Panasonic climate control system. Thanks to the new component, you can replace any part of a non-working stove only by dismantling the frill, getting rid of the windshield wipers, the stove itself or the vacuum brake booster.

If a motorist wants to understand how to remove the heater radiator on a Priora with air conditioning, he must start by removing the sound insulation located in the engine panel. After this, you should dismantle the power unit air filter hose and remove the seal, which is located near the radiator hoses. Then you should drain the coolant and lift the radiator up towards the mechanic.

Main aspects of repair

If the fan does not work or the stove generally stops working, then you need to understand that the repair process is a rather labor-intensive procedure. Before you remove the heater radiator on a Priora or how to remove the fan, you need to do diagnostics. First, the functionality of the thermostat is checked. If the lines connected to the device are warm, then the part is working.

If the fan does not work, first of all you need to check its contacts. Replacing the stove fan does not always solve the problem, especially if it involves oxidation of the contacts. Sometimes simply cleaning the connector from the device is enough to solve the problem. You can always remove the heater fan, but the heater fan does not fail very often. If the stove blows only at maximum speed, the stove rotation speed resistor has burned out.

Difficulty of choice

If it has become noticeably cold inside the car, it is worth checking the car's heating system. Most likely, the problem will be detected in the heater radiator and you will soon have to buy a new one.

The Internet is full of advertisements for the sale of heater radiators for Lada Priora, but how to choose a quality product and not “run into” a fake?

The first thing that should indicate the originality of a part is its price. High-quality spare parts cannot be cheap; manufacturers of original radiators will not allow this.

Second. The original radiator of the car heating system has small cells, i.e. the distance between the vertical slats is minimal, only factory equipment can provide this. Factory equipment “works” only with high-quality metal; the honeycombs should not be too soft.

Manufacturers of counterfeit products save on small things; they do not install “liquid swirlers” in counterfeit radiators, plastic parts that increase the heat transfer of the coolant in the radiator of the heating system. To check their presence, you should shake the part; a specific sound will indicate their presence or absence. If they are made of soft material, this method is useless.

Diagnostics of climate control Priors luxury equipment

Like all electronic control units (ECUs), the heater/air conditioning computer is diagnosed either with a portable scanner or with a full-fledged motor tester. It should be borne in mind that this system is controlled through a separate ECU called the comfort unit.

Just like standard diagnostics, the climate control system scan is connected via the OBD-2 diagnostic connector under the glove box. In general, these tests are carried out in a similar way to diagnosing an automatic heating system. With air conditioning features. That is, checking the actuators and sensors of this device.

Causes and solutions to leaks

It is important to monitor the refrigerant level in the system. There are special marks in the expansion tank for this purpose. If the level constantly drops and you have to add fluid, then the system is leaking. We need to look for the cause and eliminate it quickly. Let's look at the main reasons for leakage and ways to solve the problem:

If the radiator has a neck, then you need to check the cap. The coolant is heated to 120 degrees Celsius and circulates through the system under high pressure. If the cap is not able to hold pressure, then the antifreeze evaporates from the heat exchanger and the level drops. This problem is solved by replacing the cover with a new one.

One of the reasons for antifreeze leakage is a poor seal of the radiator cap.

A large hole in the radiator is noticeable; thick steam flows through it and antifreeze sprays

Finding a large hole will not be difficult - hot steam will pour out of it . It is difficult to eliminate such a defect on the road. Get to the nearest service station quickly and have the heat exchanger repaired or replaced. In any case, the old radiator will have to be dismantled and inspected. Some craftsmen know how to weld holes. If the radiator is made of copper or brass, then it can be soldered. Aluminum is repaired using argon welding.

A heat exchanger made of copper or brass can be soldered using a powerful soldering iron. An aluminum radiator is welded using argon welding

Experience shows that such repairs can rarely be carried out efficiently, and after just a few months the car owner is forced to replace the radiator with a new one.

It is more difficult to detect a small leak, but the antifreeze itself will help in the search. Its chemical composition contains a dye that is illuminated under ultraviolet light. Just shine a special lamp on the radiator and you will see where the coolant is leaking.

A defect discovered in a garage is eliminated using cold welding. This is a two-component epoxy resin. The prepared composition is similar to plasticine and is applied to the detected defect. Pre-clean the surface: remove dirt, oil and dust. After 15-30 minutes, the weld hardens and the leak is eliminated.

Two-part epoxy resin helps repair radiator leaks in garage environments

There is an opinion that you can eliminate a small leak using folk methods, for example, using dry mustard. This product is added to the radiator; under the influence of temperature, the particles increase in size, spread throughout the system and, where there is a leak, close the hole. Remember that once the defect is eliminated, foreign substances clog the entire system: engine channels, radiator honeycombs. Do not use traditional methods. Find another option to get to a service station or use radiator sealant.

Diagnostics using a video example

Cooling system design

The car's cooling system consists of:

• radiator;
• water pump;
• expansion tank;
• pipes and hoses;
• thermostat.

A radiator is a grille of pipes and plates made of light metal: aluminum, brass or copper. Numerous tubes reduce the cooling volume, and plates increase the heat exchanger area.

The heat exchanger for a car cooling system is made of aluminum, copper or brass

All components are connected to each other by pipes and hoses. The water pump (pump) drives coolant through one of the circuits. The thermostat is responsible for circulating the refrigerant in a long or small circle. From a physics textbook we know that a liquid increases in volume when heated. The expansion tank helps compensate for this physical property of antifreeze.

Test of modern sealants

To increase the tightness of the cooling system and eliminate leaks in the radiator, special sealants are offered to car owners. They are also called “Stop-flow”.

The attitude towards sealants is ambivalent. Same as for engine oil additives and fuel tank tablets. The opinion of car manufacturers is negative. In car maintenance books, in the section devoted to the engine cooling system, there is not a word about “Stop-leak” additives. Their answer to a leak is to replace the radiator with a new one.

But what to do if the antifreeze level drops sharply on the road and the destination is still quite far away? There is an exit. Stores and gas stations sell additives that can help fix leaks. This is an emergency method that allows you to get to the nearest service station without any problems. Sealants cannot permanently cure a radiator from leaking. The main problem with additives is the formation of excess deposits in the car’s cooling system.

Stop-leak additives are an emergency method for eliminating radiator leaks. The sealant helps you get to the nearest service center and repair the heat exchanger

To make the choice easier, a summary table with two characteristics will help: the time of clogging of holes of different diameters and the level of deposits. To evaluate the last parameter, we used the mass of the thermostat before and after applying the additive. Such testing of sealants was carried out at the Department of Internal Combustion Engines of St. Petersburg Polytechnic University.

Fines for crossing the stop line and speeding will no longer bother you!

Sealant

BBF SuperLiqui MolyK-SealHi-GearGunkFillinTime of plugging of calibration holes, s0.3 mm203075351541260.5 mm8562115962246120.7 mm124883153452452921.0 mm146118380630218—Change in thermostat mass, gDifference+1,454+1,324+0,965+1,970+2,798+1,735

The table shows that sealants cope with microcracks successfully, even large holes are blocked within 2-10 minutes.

Examples of products in the photo