Fuel Gauge question
Thread Starter
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Joined: Jul 2007
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From: 972 and 405
Fuel Gauge question
Okay I am aware there is a problem with C5 fuel gauges. I searched briefly and could not find the answer to my question. Does the problem cause the gauge to show less fuel? My gauge decreases as though I am experiencing horrible fuel effeciency. I have driven maybe 70 miles this weekend and went through more than half a tank says the gauge. So now I am on the "Reserve Fuel" warning and am planning to use some techron fuel cleaner.
-Alex
-Alex
Tech Contributor
Joined: Dec 2006
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From: Van Buren Arkansas
Wounded Warrior Escort '11
Well, start by refilling the tank to calculate how much fuel you really used as opposed to what the tank says you have left in there. Depending on that result will depend on the next actions to take. The use of Techron is always a decent and easy way to cure most tank gauge issues. From what I've read, it seems that the right tank sending unit has more issues than anything else. Check for codes and post them. If you really used all that gas, then I would expect that your car was running pretty bad and you probably knew it.
Thread Starter
Race Director
Joined: Jul 2007
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From: 972 and 405
The car pulls strong and doesn't make any weird noises, so I seriously doubt there are any problems with the engine. However, I may just not be used to the fuel effeciency of a V8 and making this out to a larger deal than it is, if anything.
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From: Horncastle Lincolnshire, England
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Okay I am aware there is a problem with C5 fuel gauges. I searched briefly and could not find the answer to my question. Does the problem cause the gauge to show less fuel? My gauge decreases as though I am experiencing horrible fuel effeciency. I have driven maybe 70 miles this weekend and went through more than half a tank says the gauge. So now I am on the "Reserve Fuel" warning and am planning to use some techron fuel cleaner.
-Alex
-Alex
A couple of bottles of Techron fixed it and it hasn't recurred for well over a year.
As David says, I think if your fuel useage was that bad, the car would tell you all was not well.
Last edited by DeeGee; Dec 17, 2007 at 01:37 AM.
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What you are experiencing is one of the problems that can occur with the fuel guage. Try the Techron like you are planning - it may help get the gauge back in proper working order.
Instructor
Joined: Oct 2007
Posts: 194
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From: Mesa Arizona
The same thing happened to me this weekend. - On the way home from shopping the tank said it was down to 1/4 tank. When I left it had 3/4 and I really didn't go all that far. Went to get gas this AM and it said just over 1/2, about what I thought it should. Thought I was lossing it . Dumb question Why does Techron help? No mater I'll try it tonight when I fill up..
Le Mans Master
Joined: Jan 2004
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From: Knoxville Tn
The same thing happened to me this weekend. - On the way home from shopping the tank said it was down to 1/4 tank. When I left it had 3/4 and I really didn't go all that far. Went to get gas this AM and it said just over 1/2, about what I thought it should. Thought I was lossing it . Dumb question Why does Techron help? No mater I'll try it tonight when I fill up..
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I was experiencing the fuel gage problem as well. I tried the techtron additive and did not get any better results, but finally found a Chevron station close by the house and started filling with 93 octane with techtron and the problem went away. Saved me $1000 for repair.