: Fuel gauge issue (Question 1)

05-31-06, 07:03 AM
What would cause my fuel gauge to start moving around from empty to full when I am less than a 1/4 tank of gas or so. 2000 deville

05-31-06, 07:52 AM
Well back in the day I would say that that's the sign of a bad ground, probably on the sending unit but who knows on these new fangled cars

05-31-06, 10:25 AM
I guess there's a sender repair kit to correct this.. maybe a search for it? It's been a while...

06-02-06, 09:24 PM
I'm curious too. Somtime my fuel gaugejump up and 3- gallon differnce. And when in read empty and I put 10 gallons and it read 14 gallons.

06-03-06, 11:13 PM
my 02 Deville just started this trick too at 62k miles. I was hoping for a quick answer and fix for this problem. I'll swap out the sending unit and pump if I have to, but would rather make sure there isn't an easier fix.

06-05-06, 09:48 PM
I have the same problem on my 2000 Deville. Happens worst on the bottom 1/2 of the tank. Had it diagnosed by the dealer and they said it was the sending unit, actually mounted inside the tank. FYI, my DIC "fuel used" indication remains accurate. I use that as myu new gas gage.

06-05-06, 10:16 PM
mine does that too, its at the dealer right now gettin fixed

06-05-06, 11:52 PM
Automobile fuel gauge sending units have been the same since the 1920's. They are a mechanical contraption that moves a rheostat in response to a float bouncing around in the gas. The resulting signal is converted to fuel level. The real miracle is that they work at all.

06-09-06, 09:00 PM
Has anyone had this fixed & about how much should it cost.