What is the easiest way to tell if my gas gauge not working is a ground wire issue or a problem with the float? Thanks!
Disconnect the wire to the tank, then ground it see if the dash gage moves empty to full, if so the dash gage is good, if not usually the float is bad.
I will try that, thanks for the quick reply! My Caddy only has 21,xxx original miles, can the float go bad with so few miles or does it go by age? Thanks..
Kevin,
What deteriorates is the element on the rheostat, oxidation sets real quickly and the moving brush rubbing against the rheostat causes the majority of the faults.
You may need to remove yours to do a visual and physical inspection.
Good luck..!
I have not done much to my Cadillac myself, it hasnt needed much and always had help. Well my help is gone so know I have to learn from scratch. I gotta ask a stupid question, I think I can figure out the wire going to the tank, how do I ground it to see if the ground is my problem? Also, if the ground is my problem how do I run a seperate ground to fix the problem?
You can splice into the wire with a jumper then ground the jumper to the frame ( key on) the gage should move, you are checking the continuity of the wire as well as whether the dash gage is working.
Got it, thanks Dave!