Ok here we go. not to long ago. my car gas gauge worked on and off. than fuel pump went bad. replace with new fuel pump and sending unit. gas gauge still works on and off. reads empty when tamk is full. sometimes reads half tank when full. sometimes reads full. any ideas what could cause this:"
SOURCE: gas gauge reads empty but tank acts like it's full
I also have a 04 with a 1.8L. same problem. I took the fuel regulator off. It is a black box behind the rear tire under car. It only has 2 bolts to take off. After that there is a couple of vent hoses from the tank going to this box. Unplug them and 1 electrical connection. The electrical connection and one vent is connected to a T connection on the box that you can unplug by twisting on the T. Take that T off and look inside where you unplugged the hose on this T. There is a spring and a little plunger inside this tube. The plunger gets stuck. I took a little screw driver and some PB blaster and worked that plunger back and forth a couple dozen times and it unfroze. Put it back together gassed up just fine. I did not look but I was told regulator can be replaced for 200$. But a can of blaster is cheaper.
SOURCE: 2005 Buick Rendezvous Fuel Gauge
well the gage is made of rubber it could be sticking no other way than to replace the gage itself/ please rate my response thank you very much
SOURCE: fuel gauge on 1993 Dodge Dakota V8
Definitely the gauge can be changed, provided the float in the fuel tank is OK, i.e. no leaks. This float connects to a potentiometer which records the current flowing thru it and displays it in the gauge. So before replacing the gauge measure the current and match that against the quantity of fuel in the tank...............sodeep
SOURCE: 2002 Chevy Suburban: Fuel gauge reads empty, tank is half full
Youre gauge is controlled by a plunger in the fuel tank which is attached to the sensor and the fuel gauge. it sounds like when the plunger goes down half way its either getting stuck down lower then it should. Needs replacing. Any mechanic can do this install for you.
SOURCE: My gas gauge does not work?
If you're fuel gauge stopped working, this would not affect the fuel pump or pump relay. More then likely, the sending unit is at fault. You may check fuses to see if this vehicle has a fuse for the gauge. some do. The fuel pump has a relay under hood and also a 30 amp fuse.Has separate circuits for gauges.I would be looking at the sending unit.
Good Luck, Sinserely, shastalaker7
Testimonial: "Thanks, I will be looking into that."
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