How do you fix a broken gas gauge on a 1989 Pontiac Bonneville?

Answer 1

The question you ask is too involved for a proper answer. You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library

U disconnect the wire @ the sending unit-the gauge should either go 2 empty or full THEN ground the sending unit wire & the gauge should do the opposite IF the guage does this then U need A SENDING UNIT-NOT A Guage.check with the key on 4 a short period of time.BE VERY CAREFUL IF ITS THE SENDING UNIT

Answer 2

Depends on what the problem is. If the fuel sender is bad, You need to take the fuel tank off and access the unit from the top of the tank.(should be a round plate about 3 to 5 inches ins diamater with small screws all the way around) Or you may have a bad connection in the wire that feeds the guege itself.

Answer 3

It is most likely the sender. This unit is attached to the fuel pump in the fuel tank. If you are going to attempt this drain the tank ( or wait till you have driven it empty ) you will need the GM fuel line quick connect tools $10 at any parts store. Undo the electrical connector to the fuel pump and all fuel lines ( after relieving pressure ), undo the bolts at the rear side of the tank straps ( it is recommended that you loosen the exhaust hanger and let the exhaust rest on the axle but it is not necessary ) then pull the tank out. The pump is held in by a retaining ring that will come out fairly easy. some pressure will be needed to set the new pump in as it is spring loaded and be careful not to damage the O ring. Just reverse removal procedure for install. Normally I would say troubleshoot the electrical system first but the sending unit is almost always the culprit.

Answer 4

you must remove the fuel tank at the top you'll see wires connecting to a round shaped object this is your sending unit buy a new one and put it in the same way you took the old one out.