1979-2004 V6 Mustang Tech Discussions

Weezlexx89 · 01-10-2013

Hey guys Ive had my fuel gauge stuck on full and ran out of gas. When I put gas in, the needle does not move at all. My car can have a gallon of gas in the tank but still the gauge reads full. What can cause this?

wmburns · 01-11-2013

There is a round plug near the center of the gas tank. Access from below near the bumper. This harness goes to the fuel tank and carries all of the signals to tank hat. Disconnect this round connector.

Does the dash fuel gauge change?

If yes, then the problem is in the fuel sender.

If no, then the problem is in the cluster.

Denbar · 01-11-2013

Quote:

Originally Posted by wmburns

If no, then the problem is in the cluster.

To add to wmburns; it could also be a short to ground if it remians on full.

Weezlexx89 · 01-12-2013

alright sounds like a got to drop the tank and take a look.

wmburns · 01-12-2013

Quote:

Originally Posted by Weezlexx89

alright sounds like a got to drop the tank and take a look.

The tank does NOT have to be dropped to access the round plug. The round plug is in plain sight.

This test is designed to help narrow down where the problem is so that you don't have to needlessly drop the tank.