Fuel Guage Inoperative, Help Please.

[keith wood]

Awaiting new sender unit ill let you know how i get on Regards Keith

[kevin]

Originally Posted by raykay

I think there are two sensors, one attached to the filter unit in the left side of the fuel tank and one attached to the fuel pump unit in the right, the guage uses the input from both.
One of the dash diagnostic checks can test them.

any one know which diagnostic check tests them?

[SD1too]

Originally Posted by keith wood

The fuel gauge rises about one millimetre with the ignition on and running but that is all with a full tank of fuel.

Keith,

MG Rover's technical information says that "...if any fault occurs in this circuit the gauge defaults to zero and the low fuel warning lamp is illuminated." There are two fuel level senders wired in series. The black & slate wire seems to be the return, the green & brown wire links the two senders, and the green & black wire is the 'analogue' output to the instrument pack. The circuit is shown hard-wired from the senders to the instrument pack. They do not run through the fuse box.

To test the instrument pack depress the odometer trip reset button whilst turning the ign. key to 'auxiliary' and when '1' appears in the odometer display release & press the trip reset button again until '2' is displayed. Release the button whereupon '2.0' should be displayed. A further press of the button causes all the gauges and warning lamps to be driven simultaneously thereby allowing any instrument pack faults to be observed.

Hope this helps your diagnosis.

Simon.