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Erratic gas gauge

Tiny
BRUINBKS
  • MEMBER
  • 2002 CHEVROLET VENTURE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 91,019 MILES
A couple weeks ago my gas gauge started bouncing around when I started up. It went up to full then fell back and hovered around half and quivered for a bit. After I was on the road for a while it settled down to what probably was the right fuel level. Fuses all checked out OK. Need some ideas. Thanks.
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Saturday, February 12th, 2011 AT 10:30 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,269 POSTS
The float in the fuel tank is attached to a rheostat. Basically that is a resister that sends power to the gauge. Based on how much gas is in the tank, a certain amount of power is sent. Chances are it is going bad. The bad part is this. The float assembly is part of the fuel pump assembly, so it isn't a cheap part and the fuel tank needs removed to replace it.
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Sunday, March 27th, 2011 AT 3:27 AM

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