IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: shmed on July 16 2014, 05:48:56 PM

Title: fuel gauge ?
Post by: shmed on July 16 2014, 05:48:56 PM

hi all  just wondering what would cause my fuel  level gauge read beyond full when the car is running   but with motor off   key on it reads what I think the level of fuel is?
 

Title: Re: fuel gauge ?
Post by: Steve Wood on July 16 2014, 06:47:40 PM

all of my cars have done that at one time or the other.  You might try pulling the gauge out and cleaning the terminal posts to see if that helps.  One of mine is doing it badly after filling up but it reads right after it comes down a bit

Title: Re: fuel gauge ?
Post by: tb3 on July 18 2014, 08:15:36 AM

I pulled my sending unit out and lightly cleaned the contacts on the potentiometer with some white scotch Brite and that put my fuel level indication back to accurate. but that was just my particular case.  may or may not be the problem you have

Title: Re: fuel gauge ?
Post by: SuperSix on July 18 2014, 11:06:00 AM

First - check/clean the contacts on the rear of the instrument panel. The fuel gauge traces and connections are less prone to oxidation than the other circuits, but it's still the first thing to check.

If that doesn't help, drop the tank and burnish the sender as indicated above.

Title: Re: fuel gauge ?
Post by: earlbrown on July 19 2014, 12:25:24 PM

And if you really want to increase the response time, solder a ground lead from the float arm to the hanger body.

I can damn near see fuel slosh with my gauge.

Title: Re: fuel gauge ?
Post by: Steve Wood on July 19 2014, 02:20:24 PM

We call that a Ground Circuit Fault Eliminator/Inertial Dampner.     GCFE/ID