Fuel Gauge Problems
Thread Starter
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Joined: Nov 2006
Posts: 54
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From: Lavonia GA
Fuel Gauge Problems
I have a C5 1998 with a fuel gauge that wants to quit sometimes. It is after I fill up and run for a while. The gauge goes down to empty and the check gauges light comes on. I can turn the car off and restart, and everything is working great.
Can anyone help in why and what I need to do to fix!!!
Can anyone help in why and what I need to do to fix!!!
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Its caused by sulfur build up on the gauge sensors. If it's still intermittent thats a good thing. Stick with the Techron and it should work. it certainly did for me after only a couple of bottles. Its possible to do the sensor change DIY if it gets to that but Techron should be the solution. you might want to consider changing where you get your gas if its causing fouling. Try a Chevron or a Shell station.
