We remove the fuel module to replace the fuel filter, as well as in case of malfunction of the module parts
The module structurally consists of an electric pump, a fuel level sensor, a pressure regulator and a coarse filter.
Malfunctions in which the fuel pump module is repaired:
- malfunction of the pressure regulator;
- fuel pump failure;
- clogging or damage to the coarse filter;
- failure or incorrect operation of the fuel level indicator sensor.
Symptoms of a fuel pump malfunction are a decrease in the power and dynamics of the car, failures in acceleration mode, unstable engine operation in idle mode.
A sign of deterioration in the operation of the fuel pump is a "howling" or a constant unpleasant hum, with excessive wear of the pump part due to operation with poor, uncleaned gasoline.
The smallest mechanical impurities contained in such fuel contribute to the wear of the rubbing surfaces of the pump part.
The reason for the rapid wear of the pump is also driving with a low fuel level in the tank, with the backup fuel remaining light on. Because the electric pump is cooled by the fuel in the tank.
To remove the fuel pump module:
We are preparing the car for the task.
We reduce the fuel pressure, for this we remove the fuel module relay in the fuse box and relay in the engine compartment (Figure 1)
We start the engine and wait until it stalls from fuel generation.
Disconnect the negative terminal of the battery.
In the car interior, we recline the rear seat cushion
We pry with a flat screwdriver and lift the lid of the fuel tank hatch
Using a flat screwdriver, we squeeze out the lock of the wire pads
Disconnect the pad from the module connector
Press the lock on the tip of the fuel tube
Disconnect the tip from the fitting of the module cover
We are trying to unscrew the pressure ring of the module with the mounting blade
If it does not work out, we make a bracket from a metal bar according to the dimensions
Unscrew the pressure ring
Carefully remove the fuel module from the tank, removing the float of the level sensor from the hole in the tank
Removing the sealing rubber ring
After pouring out the remaining fuel from the fuel module, disconnect the cable block of the fuel level indicator sensor
Release the lock of the fuel level indicator sensor
Removing the fuel level indicator sensor
Using a screwdriver, we release the three cup latches
Remove the glass from the filter housing
The connection of the fuel pressure regulator channel is sealed with a rubber ring
In the cup there is a fuel pressure regulator 1 and a counter-drainage valve 2
We remove the strainer from the pump fitting
Using a screwdriver, we squeeze out the lock of the fuel module lid
Removing the lid
Removing the spring from the guide
Disconnect the fuel pump wiring block from the connector on the inside of the fuel module cover
Removing the fuel pump from the fuel filter socket
We heat the plastic corrugated tube with a technical hairdryer or hot water
We remove the tube from the pump nozzle
We install all the parts in reverse order.
During the installation of the module, we monitor the correct location of the O-ring.
Installing the module in the tank
When installing, we orient the fuel module so that the arrow on its lid is located opposite the arrow on the tank.
We press on top of the module cover and screw the pressure ring on the neck of the fuel tank until the module cover is tightly pressed against the neck.
Then we turn the pressure ring to the position where the arrow 3 on the ring is located opposite the arrows 1 and 2.
We put the tip of the fuel tube on the fitting of the module cover until the latches click.
After installing the module, turn on the ignition and check the tightness of the connections.
When installing the hatch cover, we orient it so that the arrow 1 on the lid is located opposite the slot 2.