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1979-2004 V6 Mustang Tech Discussions

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Unread 01-10-2013   #1 (permalink)
Weezlexx89 is offline Apprentice


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Default 98 Mustang Fuel gauge not working.

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?
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Unread 01-11-2013   #2 (permalink)
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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.
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Unread 01-11-2013   #3 (permalink)
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Quote:
Originally Posted by wmburns View Post
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.
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Unread 01-12-2013   #4 (permalink)
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alright sounds like a got to drop the tank and take a look.
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Unread 01-12-2013   #5 (permalink)
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Quote:
Originally Posted by Weezlexx89 View Post
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.
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Unread 07-23-2013   #6 (permalink)
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Thanks to everyone posting. This helps me too.
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