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 printable version
The fuel pump / fuel level sensor
On models with petrol engines the fuel pump with fuel level sensor installed in the fuel tank. On front-wheel drive diesel fuel from the tank climbs high pressure fuel pump in the tank and no fuel pump. On all-wheel drive vehicles with diesel engines is installed in the fuel tank fuel pump. By design, the fuel level sensor consists of a potentiometer and the associated float. By reducing the amount of fuel drops and the float sensor, increasing the resistance of the potentiometer reduces the voltage at the fuel level indicator located in the instrument cluster.
Withdrawal
| PERFORMANCE ORDER | | 1. Turn off the ignition and remove a wire of weight from the accumulator. | | 2. On the right side of the luggage compartment carpet peremesite back and unscrew the cover, located above the fuel pump / fuel level sensor. To access cover is located on Noi fuel pump / gauge of level of fuel in the all-wheel drive cars Remove the rear seat. | | 3. Disconnect the electrical connector of the fuel pump / fuel level sensor. Keep in mind that the pipe supplying fuel under pressure. Before disconnecting, remove the fuel pressure in the fuel system. To do this, loosen the clamp on the fuel line, then close the connection with rags and, being careful, remove the fuel hose from the union. To protect the eyes from fuel use protective glasses. | 
| 4. Loosen and remove the clamp from the mounting flange fittings supply and return fuel lines. Close the ends of pipelines suitable stoppers. |  | 5. Using a special tool VW-3217, remove the flange nut. To loosen the flange nuts on all-wheel drive cars must use a special tool VW-3087. In the absence of a special tool, unscrew the nut of the flange using a wooden block and a hammer. | | 6. Remove from the opening of the fuel tank mounting flange and O-ring. | | 7. On the inner side of the mounting flange Mark and disconnect the electrical connectors and fuel hoses. | | 8. Carefully disconnect the fuel level sensor and remove it from the fuel tank. |
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Gas engine
| PERFORMANCE ORDER |  | 1. Using the special tool VW-3307, release of the fuel pump retainer by turning it 15 ?�, and remove the fuel pump from the tank. Fixing is carried out a special tool in the recesses of the fuel pump housing. | | 2. Drain the fuel from the fuel pump into suitable containers. |
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Setting
Combining marks when installing the mounting flange on the fuel tank
| 1 - label on the mounting flange,
2 - a label on the fuel tank |
| PERFORMANCE ORDER | | 1. Install the fuel pump into the fuel tank. Before installing the seal ring dip fuel. | | 2. Turn the fuel pump clockwise and lock it in the fuel tank. | | 3. Secure the fuel gauge in the fuel tank clamps. | | 4. On the back of the mounting flange and connect the electrical connectors and fuel pipelines. | | 5. Install the mounting flange so that the mark on the flange is aligned with the mark on the fuel tank, see. Fig. Combining marks when installing the mounting flange to the fuel tank. | | 6. Screw the flange nut and use special tool VW-3217, tighten it to 60 Nm. | | 7. Put on the mounting flange fitting supply and return fuel hoses and fix their collars. The arrows indicate the direction of unions on the fuel flow. The return fuel hose blue. | | 8. Connect the electrical connector to the mounting flange. | | 9. Replace the cover over the mounting flange and tighten the screws. | | 10. Check the correctness and reliability of fastening of fuel and air hoses to the fuel tank. | | 11. Replace the carpet luggage. Four wheel drive set the rear seat. | | 12. Connect the ground cable to the battery. |
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