Fuel pump on a Priora: where it is installed, why it doesn’t work, features of correct testing, how to remove and replace the device, connection with DPKV and immobilizer

Typically, the fuel pump is changed extremely rarely, since this module is quite reliable and requires a minimum of attention. The main reasons why you generally have to remove or change the fuel pump on a Priora:

1. Reduced pressure in the fuel rail
2. Replacing the FLS
3. Replacing the mesh (mesh filter)

In order to remove the fuel pump from the Priora tank, you will need the following tool:

• Phillips screwdriver
• Head 10 (preferably deep)
• Ratchet handle or crank
• Extension

The procedure for dismantling and installing a fuel pump on a Priora with your own hands

Using a Phillips screwdriver, unscrew the two screws securing the cover, and the pump will be located under it. Next, we need to disconnect the two fuel hoses by first pressing the clamps that secure them to the fittings of the top cover. One hose is secured with one metal clamp, which you need to press on and pull the hose to the side.

The second hose fits more tightly and in order to remove it, you need to press the “buttons” on both sides, which are shown in green in the photo below.

After this, disconnect the power plug with wires from the module by lifting the latch slightly upward.

Next, unscrew all the pump mounting nuts using a 10 mm socket.

Remove the ring as shown in the photo below.

And the second plastic ring also needs to be removed from the studs.

After this, it will be possible to remove the entire fuel pump module from the tank assembly, since nothing else holds it.

To pull it out completely, you need to tilt it slightly to the side so that the fuel level sensor does not interfere with removal.

Please note that when removed, there may be a lot of gasoline in the container, so it must be drained immediately. Then you can take further actions, either replacing the pump, or the grid, or the fuel level sensor.

After completing all the necessary procedures, you can begin installing the pump in its original place and connecting all hoses and power wires. It is worth noting that the fuel pump on the Priora is from a new VAZ 2110 model, that is, for 1.6 liter engines. The price of such a pump assembly ranges from 2,200 rubles to 3,000 rubles.

Most of the units and components in cars of the Lada Samara model line can be changed with your own hands. To do this, just stock up on the necessary tools and purchase a new part. This material describes in detail how to replace a VAZ 2110 fuel pump and its filter element - a mesh. The work is quite simple, since installing a new product does not require an inspection hole or a lift. After studying this material, the reader will learn how to change the fuel pump, when it needs to be done and how to determine that the unit has failed. To make sure that the device has failed, you need to measure its pressure - the article contains several ways to perform this action.

Advice! Many Samara owners install a VAZ 2110 Bosch fuel pump. Despite the higher cost, the imported unit has a long service life, and it is easier to maintain when compared with a standard unit.

Manufacturers and prices of analogues

What car owners expect from analogues is maintaining normal pressure in the fuel supply system. If the electrical system is quite weak, there is no point in installing it. There is a list of proven devices for supplying fuel to the engine, which have been well rated by other owners and are suitable in their parameters for replacing the standard device:

• Soate 21101-1139-01, price – 1,600 rubles.
• Bosch 0580-453-453, cost – 4,500 rubles.
• Pekar 2110-11139009-00, price 3,100 rubles.
• Stellox 10-01202-SX, cost – 1,000 rubles.
• Stellox 10-01680-SX, cost – 3,000 rubles.
• STARNER 2112-11390-09, cost – 1000 rubles.
• Masuma MPU-103, cost – 2,800 rubles.
• Denso DFP-0105, priced at RUB 3,200.

Pump operation and malfunctions

From the name you can understand that the fuel pump supplies fuel from the tank to the engine injectors. Accordingly, if the unit is faulty, then there will be no gasoline injection, and the power unit will not start working. There are options for injector and carburetor. The VAZ 2110 is equipped with an injector; therefore, the fuel pump must be suitable for this system. If the “ten” was modernized by installing a carburetor, then the unit will have to be taken out of stock. The unit is located in the fuel tank - under the left rear door, the electrics go under the rear row seats.

It is quite simple to understand that there are faults in the pump or its network:

• The car won't start. There are many reasons for this malfunction, but before performing a full diagnosis, you need to check whether the pump mesh is clogged or clogged.
• There are noticeable jerks in first gear. There are also many options here, but one of them is a non-working fuel pump.

Priora fuel pump fuse

The Priora fuel pump fuse is not located in the standard location for all fuses. It is located at the front passenger's feet, under the footwell air duct cover.

The red oval shows the fuel pump fuse

Rated current of this fuse = 15A, number F3;

It is strictly prohibited to install fuses with a rating higher than specified.

Replacing the pump and its filter

Required Tools

Buying a new unit is only worth checking its pressure and condition of the parts. Replace with a Bosch fuel pump. If a standard unit is selected, then its product number is 2112-1139009. To work you will need the following tools:

• Screwdriver Set.
• Rags.
• Set of wrenches.
• Set of socket heads.

Replacement process

Replacing the filter or the entire unit will take no more than an hour. The work proceeds according to the following scheme:

1. First you need to disconnect the negative terminal from the battery;
2. Next, you need to dismantle the plastic cover, which is located under the rear row seats;
3. Using the key “17”, you should loosen or completely unscrew the hoses, and also turn off the power to the unit;
4. The next step is to unscrew the nut. The action must be performed in such a way as not to damage the float. Sometimes a plastic element remains in the tank, which is difficult to remove;
5. After this, the filter (mesh) can be dismantled, cleaned and, if necessary, replaced;
6. If replacing the “consumables” does not bring the expected results, then it is worth checking the operation of the unit itself and its pressure - a separate paragraph is devoted to this issue;
7. The fuel pump is attached to the housing with eight bolts. After this, you can remove the O-ring;
8. Now the unit can be removed along with the float and the rubber seal can be removed;
9. When installing a new device, you need to make sure that the arrow is directed to the rear of the car;
10. Having connected all the lines, the lid can be closed - the replacement is completed.

Price

Below are the prices and part numbers for the fuel pump, depending on the manufacturer.

The table below shows the elements of the fuel cup and their prices, taking into account the manufacturer.

How to measure the pressure in the fuel system?

The easiest way to measure pressure is with a special device - a pressure gauge. The kit also includes an adapter and drain. Pressure can be determined using an air pressure gauge. This device is present in almost every motorist, as it is used to measure tire pressure. A normally functioning pump in a VAZ 2110 should have a reading of 2.8-3.2 atm. You need to connect the pressure gauge and check what the indicator is with the engine not running, but with the fuel pump on. It must be no lower than 2.8 atm.

Reasons for the fuel pump not pumping

Quite often it happens that the Priora fuel pump simply stops pumping fuel. There are many reasons for this problem, but in order to find them you need to understand what can affect the performance of the fuel pump. Below are all the reasons why the pump may stop pumping fuel into the system.

Fuse

It often happens that the fuse blows under load and breaks the power supply circuit to the fuel pump. As a result, the fuel pump cannot work. The fuse needs to be checked.

The relay is directly responsible for the operation of the fuel pump, thereby turning off the operation of the pump if it fails. It happens that the contacts on the relay oxidize or the coil burns out, which leads to the pump stopping and the inability to pump pressure into the system.

Filter

Fuel filters, fine and coarse filters are clogged. They need to be checked, or at best replaced.

Gasoline pump

It is also possible that the fuel pump itself may fail. Due to aging or poor quality fuel. You can read how to check the fuel pump in our article.

Replacing the fuel pump mesh on a Chevrolet Lacetti.

Step 1: Before starting work, relieve the pressure in the fuel rail. . To do this, you need to pull out fuse Ef18 (fuel pump) in the engine compartment. After which you need to start the car and let it stall.

After the seat is removed, you will see the fuel pump plug. This plug sits on bitumen mastic - similar to the one presented in professional vibration isolation. The plug is removed by picking it up with a flat screwdriver - carefully, around the perimeter.

And, pressing the tab of the chip itself, we pull it off the connector.

And we move it to the side, avoiding contact with metal parts of the body.

Step 4: . Disconnect the fuel lines. To do this, you need to squeeze the clip-petal at the bottom of the plastic end of the fuel line with your fingers and pull it up.

Step 5: Remove the fuel pump retaining ring. To do this, you can use a pair of flat screwdrivers (longer and thicker) - rest against the windows of the lock and turn the locking ring counterclockwise. The ring fits very tightly and is difficult to turn.

Step 6: Pull up the fuel pump module, allowing the remaining gasoline to drain into the tank (remember the float when pulling out). At the same time, make sure that not a drop of gasoline gets on the chip with the wires: there is a sensitive rubber seal there, which, upon contact with gasoline, will swell greatly and become unusable!

Step 7: Now we begin to disassemble the fuel pump itself on the Chevrolet Lacetti.

Remove the connector by pulling the latch down.

Step 8: Bend the fasteners (4 of them) around the circumference of the body and carefully pull out the top cover with the terminal and the fuel pump itself from the glass.

Step 9: We pry off the nozzle with a screwdriver, after which it is pulled out well and remove the glass.

Access to the Chevrolet Lacetti fuel pump grid is provided.

Step 10: . After this, inspect the mesh and replace it. Most likely, it won’t even give any light because of the dirt. Even metal contamination is possible. Compare what the new and old meshes look like.

Step 11: Inspect the pump module bowl. Often, it is full of dirt.

Step 12: When installing the new screen on the fuel pump, make sure that it sits completely on the neck of the fuel pump.

Step 13: Assemble everything in reverse order.

Gasoline pump

The Priora fuel pump is a kind of electric DC motor in the form of a cylinder. Inside the pump there is a shaft on which an impeller is rigidly mounted that pumps fuel into the system and a check valve that does not allow the fuel to lose pressure in the system after the pump stops.

The operating pressure in the system that the pump must maintain is in the range of 3.6-4.0 bar. If there is a loss of pressure in the system, the engine will operate unstably, losing speed and detonating.

The fuel pump cannot work alone, so it is part of the fuel cup of the fuel pump. This glass contains all the necessary elements for pressurizing the fuel system.

The fuel pump capacity according to the manufacturer’s requests is from 60 l/h.

Symptoms of unit malfunction

Malfunctions of the Priora fuel supply pump can manifest themselves in different ways.

Sometimes it fails completely, in other cases it maintains too low pressure in the system. Symptoms of problems are:

• after turning the key in the ignition switch, the characteristic sound of the fuel pump is absent, and the engine does not start;
• when the ignition is turned on, the pump pumps, the power unit starts, but when you try to move away, the engine stalls and starts with difficulty;
• The car jerks while driving, stalls and does not want to start.

The first symptom indicates a malfunction in the electrical circuit that supplies power to the unit. Also, a complete failure may be the result of a breakdown of the pumping device itself, and it has to be replaced. Fortunately, such breakdowns are quite rare. Electric fuel pumps installed on VAZ cars are considered quite reliable devices and operate without problems for 150-200 thousand km.

The remaining 2 symptoms indicate that the amount of fuel supplied to the injectors is not enough for normal driving. If the car somehow starts and idles, then there is no longer enough fuel to move. Since the characteristic symptoms of low pressure in the line are similar to the symptoms of problems with other units and systems, it is necessary to carry out diagnostics and more accurately determine the cause.

see also

Comments 29

The nuts are not 10, but 6. M6. Turnkey for 10

Hello! In the 3rd photo is the mass of the fuel pump? If yes, what plug does it come from?

Thank you very much, I will follow your instructions! Good luck on the roads

The author hammer! I’m currently doing this (for the first time) and following your lesson. No nail, no rod for you, and a free 95th. Ufa

Thanks for the article and photos! Very useful!

Clear and to the point) the procedure itself is simple, but for those who want to read it for the first time)

Today tomorrow I will do just this procedure

Is there a difference in the brand of the mesh? Can I take a mesh from a certain company?

Useful work for the car. I have a regular cheap one

Listen, not entirely on topic, I once removed the fuel pump, but the mesh was fine, I put it back, I called your attention, in the third photo you point your finger at the nut, and under it there is a wire, please tell me what it is for and what it connects to, I had it screwed on to the sealing ring, I pulled it, and the other eye of this wire was in free flight, I can’t imagine what this wire is for, if it is not screwed anywhere, I washed it off then screwing it to the retaining ring

Operating principle of RTD

The valve design and operating principle depend on the type of fuel system of a particular vehicle. There are 3 ways to supply gasoline from the tank to the injectors:

1. The pump together with the regulator is installed inside the tank; fuel is supplied to the engine through one line.
2. Gasoline is supplied through one tube and returned through another. The fuel system check valve is located on the distribution rail.
3. The circuit without a mechanical regulator provides for electronic control of the fuel pump directly. The system contains a special sensor that registers pressure; the pump performance is regulated by the controller.

Signs of a fuel pump malfunction

There are several signs of a fuel pump that predict its imminent failure. If you notice such symptoms in your car, it is recommended not to delay replacing the pump, but to carry it out immediately.

Symptoms:

• The car engine did not start the first time;
• It is necessary to turn the starter much longer than usual;
• Dips when moving at a constant speed;
• Jerks when moving;
• The former dynamics have disappeared;
• A strong squeak of the pump is heard when the internal combustion engine is running;

Product selection

AvtoVAZ offers an original fuel pump for 4,000 rubles. The original catalog number is 2112-1139009. But many car enthusiasts buy and install cheaper analogues instead of the original.

Analogs

Bosch fuel pump.

A non-original part is often no different in quality from the original. So, if the vehicle owner wants to save money, then you can install a non-original part. Let's consider the main offers of analogue companies:

1. Fenox EFM33006O7 - the cost of such a part will be about 3,000 rubles.
2. Bosch 0 560 454 035 - as they say, I took BOSCH, and ... (go ahead).
3. Ween 192-0262 – the price on the spare parts market will be approximately 3,000 rubles.
4. Pekar 2112-1139009 - will cost a little more than the previous two, the average price is 3,500 rubles.
5. ATS 53453 - praised, but the price tag is good. We know they put one like this as a replacement for expensive originals on Peugeot.

   ATS fuel pump.