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.
Faults in which the fuel pump module is repaired:
- - pressure regulator failure;
- - failure of the fuel pump;
- - clogging or damage to the coarse filter;
- - failure or incorrect operation of the fuel gauge sensor.
Symptoms of a fuel pump malfunction are a decrease in vehicle power and dynamics, dips in acceleration mode, unstable engine idling.
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, unrefined 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 level of fuel in the tank, while the reserve fuel light is on.
Because the electric pump is cooled by the fuel in the tank.
To remove the fuel pump module:
Preparing the car for the task.
We reduce the fuel pressure, for this we remove the fuel module relay in the fuse and relay box in the engine compartment (Figure 1)
We start the engine and wait until it stalls from running out of fuel.
Disconnect the negative battery terminal.
In the car, fold back the rear seat cushion
Pry off with a flathead screwdriver and lift the fuel filler cap
Using a flat screwdriver, we press the lock of the wire block
Disconnect the block from the module connector
Press on the latch of the fuel pipe tip
Disconnect the tip from the fitting of the module cover
We try to unscrew the clamping ring of the module with a mounting spatula
If it doesn’t work out, we make a staple from a metal bar in size
Unscrew the clamping ring
Carefully remove the fuel module from the tank, removing the level sensor float from the hole in the tank
Remove the sealing rubber ring
Having poured out the remaining fuel from the fuel module, disconnect the wire block of the fuel gauge sensor
Release the lock of the fuel gauge sensor
Remove the fuel gauge sensor
Use a screwdriver to release the three glass clips
Remove the glass from the filter housing
The connection of the fuel pressure regulator channel is sealed with a rubber ring
In the glass there is a fuel pressure regulator 1 and an anti-drain valve 2
Remove the strainer from the pump fitting
Using a screwdriver, we press the fuel module cover retainer
Remove the lid
Remove the spring from the guide
Disconnect the fuel pump wiring harness from the connector on the inside of the fuel module cover
Remove the fuel pump from the fuel filter socket
We heat the plastic corrugated tube with a technical hair dryer or hot water
Remove the tube from the pump nozzle
Install all parts in reverse order.
During the installation of the module, we control the correct location of the sealing ring.
Install the module in the tank
When installing, orient the fuel module so that the arrow on its cover is opposite the arrow on the tank.
We press on the module cover from above and wind the clamping ring onto the fuel tank neck until the module cover is firmly pressed against the neck.
Then turn the clamping ring until the arrow 3 on the ring is opposite the arrows 1 and 2.
We put the tip of the fuel pipe 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, orient it so that arrow 1 on the cover is opposite groove 2.