1991 Pontiac Bonneville Q&A

1991 Pontiac Bonneville Question: my gas gauge is acting weird?"

i thought my gauge was stuck all the way past full, now it goes down to full, when car is off, is it registering at all? and how can i locate the trouble? thanks... -
Answer 1
You should check out the fuel level sensor in the fuel tank. You will need a repair manual that includes the specifications for the sensor and a meter to measure the signals to and from the sensor. -
Answer 2
sometimes when you have a bad grounding wire to the fuel tank or sending unit it will make the guage read full -