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Discussion Starter #1
removed Tank to facilitate 4 Link suspension install.
Fuel gauge worked great before then.
now Gauge is pegged far to the left past empty?
I think it can be sending wire is grounded.
if ground was faulty it would go to full plus.
what ya think?
 

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Probably a wiring issue, but the sending unit float could be stuck as well.
 

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Check for a bad ground wire on the tank sender. May be loose or not connected at the right side tank strap where the wire attaches. Believe I am in error on the ground wire disconnect- that would increase resistance and send the gauge past full. A grounded tan sender wire would show no resistance and send the gauge below empty. See if ya have a shorted brown sender wire-
 

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Broken wire or ground wire disconnected from tank to chassis
 

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If the gauge worked before and now the sender wire is shorted or pinched to ground, when the key is turned to run, the gauge needle should be at empty or below. A shorted or pinched to ground sender wire has the gauge seeing 0 ohms which then should make it read empty or below.

To do a basic test, go into the trunk and disconnect the sender wire by the taillights. Now go inside the car and before you turn the ignition to run, the gauge per your post should be pointing at empty or below. Now turn the ignition switch to run and now the needle should swing up to full or above due to the open circuit.

Remember 0 ohms or shorted to ground sender wire should make the gauge read empty or below while an open on the sender wire should make it read full or above.

Jim
 
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