Volkswagen Golf Service & Repair Manual: Testing quantity of fuel delivered

Volkswagen Golf Service & Repair Manual / Auxiliary heater / Aux. heater/heater booster / Fuel supply system / Testing quantity of fuel delivered

Note

Check fuel delivery rate as described in “Guided Fault Finding” function, vehicle diagnostic tester in “Guided Fault Finding” mode.

Conditions for checking fuel delivery rate (in short):

Coolant temperature below 30 °C

Ambient temperature below 25 °C

Fuel tank sufficiently filled (needle on fuel gauge in dash panel insert is not in red zone)

Battery -A- (vehicle battery) fully charged

Fuel line (from fuel tank to auxiliary heater) installed according to specifications and filled completely with fuel

Auxiliary heater installed completely and connected to vehicle electrical system

All auxiliary heater fuses OK (according to current flow diagram) → Current flow diagrams, Electrical fault finding and Fitting locations

Auxiliary heater is switched off

Event memory of all self-diagnosis compatible systems read out; cause of any faults displayed in vehicle systems eliminated; displayed event memory entries erased, vehicle diagnostic tester in "Guided Fault Finding".

Note

A higher ambient or coolant temperature can lead to incorrect measurements of the fuel quantity delivered due to fuel evaporation.

Complete description of conditions for checking fuel delivery rate vehicle diagnostic tester in “Guided Fault Finding” mode.

If the quantity of fuel delivered is in the lower tolerance range and there are starting difficulties with the auxiliary heater, check the fuel lines to the auxiliary heater → Chapter. If no fault is found, renew the metering pump -V54- → Chapter.

–	Check fuel delivery rate of metering pump -V54-vehicle diagnostic tester in “Guided Fault Finding” mode.

Overview of fitting locations - fuel supply system, Golf Variant

Note Fuel lines are secured with O-type clips. These O-type clips must always be renewed every time they are removed. Star ...

Removing and installing metering pump -V54-, Golf and Golf Estate

Note Pay attention to correct part number of metering pump -V54- (different versions) → Electronic Parts Catalogue. R ...

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Vehicle registration documents since 01-10-2005
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Bleeding fuel line to metering pump -V54- (filling with fuel)
Note Air/fuel vapour in the fuel supply to the auxiliary heater can lead to malfunction when the auxiliary heater is in the sparking mode. To prevent air/fuel vapour from being drawn in by the metering pump -V54- and conveyed to the auxili ...