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Old Jul 11, 2009 | 09:35 PM
  #1  
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Default Sorry, gas gauge question

I 've read many threads about the sulfur build up on the fuel level sensor that gives false fuel level readings. Some have had luck correcting this by using Techron or Sea Foam. I read an article in Corvette Fever and they recommended using Fuel System Treatment Plus from a chevy dealer. Not having this problem with my 99, YET , but wondering if they are all the same. Or is the GM stuff better. Has anyone tried the GM treatment.
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Old Jul 11, 2009 | 11:09 PM
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Never tried the GM stuff. I used Techron and never had any problems with the fuel gauge.
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Old Jul 11, 2009 | 11:20 PM
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I fill up with Chevron and I avoid the issue since it has techron. In the past I had issues when I changed brands.
rr
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Old Jul 12, 2009 | 01:57 AM
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Not sure about that cleaner but if the cleaner is formulated to treat sulfur it would work. I'd guess that most are. Techron is proven to fix the problem and worked for most members. Best solution is just to run a pre-emptive bottle through the system every now and then. Even if you do hit problems, treat it as soon as you see it and it should clean the sensor.

In my case I had the gauge show 3/4 and creep up to full just after I'd filled up. Two bottles of Techron fixed it but I used it straight away. That was well over 2 years ago and its still running fine.

Last edited by DeeGee; Jul 12, 2009 at 01:59 AM.
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Old Jul 12, 2009 | 02:01 AM
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I tried two tanks of Chevron gas and I still have the problem occasionally. I will try sea foam next.

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Old Jul 12, 2009 | 02:02 AM
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I only use Chevron fuel, It is good fuel with the techron and no need to add anything else.
Never an issue.
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Old Jul 12, 2009 | 05:04 AM
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I've tried the GM stuff. Not cheap. Didn't work. But like others, I have been using Chevron since I bought the car and adding some extra Techron once in a while and now it seems to be working fine. At least it did the last time I filled up. Took a while to get it going again. Mine wasn't really bad but would stay about 1/2 tank for maybe 10 minutes and then it would gradually go to full like it was supposed to and work fine after that.
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Old Jul 12, 2009 | 05:11 AM
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just buy some techron and add it once in a while.
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Old Jul 12, 2009 | 03:54 PM
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OK, thanks for the replies. I don't have a Chevron near me, do have a Shell and BP, both claim to have additives to clean the fuel system. So far, my 99 is working OK. I do put in a large can, 20oz. I think , once in a while. Wonder if it or Sea Foam would be better when added to let the car sit for a couple of days to help clean the fuel lever sensor arm.
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Old Jul 12, 2009 | 04:19 PM
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Try this technique.

run car until tank(s) are about half full.
Add techron or seafoam
Let sit at least over night.
Get fill up, drive,,,
repeat at least once more a week later.
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Old Jul 12, 2009 | 04:49 PM
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I run Texaco and Chevron exclusively since I started having problems. I carry a couple of bottles of Techron and dump them in at odd intervals. SInce I've started doing this, I've never had a problem...
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