Until this week my car hadn't been driven for about 8 months while I've been giving it a makeover. It sat with the tank almost empty the whole time and now the gauge doesn't want to work. I put 50 bucks in the tank and the gauge bounces around between 1/4 and 3/4 and then sometimes just goes to empty and stays there for a while. Not sure if it's the gauge or sending unit or what. Any help would be much appreciated.
having the same problem after installing fore fuel hat with 3 walbro fuel pumps and still don't know how to fix it ... :/
Hopefully someone can help us out.
Not sure about this car but most cars have a voltage regulator or limiter as the fuel guage uses 5 volts. If you can get to the sending wire and measure the resistance it shoud be somewhere abou 90 ohms for full and on down as the tank empties
Well first of all is this a stock fuel pump?
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Mine is a completely stock 3.5
Most likely one of the sending units is going bad.....there are two. So if you fill the tank and only see half on the gauge that is the reason. The plug is under the seat on the drivers side. you need to check the gauge lead to ground with an ohm meter. I would have to dig through the manual to find the exact ohm readings you are looking for but you will need to pop out both baskets in order to move the floats to both empty and full positions.
Thanks so much! I'll give it a shot.