C5 fuel gauge issue
Thread Starter
Melting Slicks
Joined: Jan 2001
Posts: 2,016
Likes: 31
From: Little Egg Harbor N.J.
C5 fuel gauge issue
I know the fuel gauge on these cars is a known problem and the recommended "fix" is to periodically pour Techron into the fuel tank.
I have been doing this on my 2002 Z06 on a regular basis but, just last week I was on a long drive and the gauge suddenly went from a little less than half a tank to zero.
Is there a more permanent fix to this condition or do we just dump Techron into the tank? I see Royal Purple also makes a fuel additive and it claims to be good for 10k miles; is anyone using it or are you sticking with the Techron for some reason?
I have been doing this on my 2002 Z06 on a regular basis but, just last week I was on a long drive and the gauge suddenly went from a little less than half a tank to zero.
Is there a more permanent fix to this condition or do we just dump Techron into the tank? I see Royal Purple also makes a fuel additive and it claims to be good for 10k miles; is anyone using it or are you sticking with the Techron for some reason?
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Other Forum member have not gotten relief by using Techron as well. The permanent fix (until the new sensor develops oxidation) is to replace the fuel level sensors. There is one in each tank. There should be a PCM code set that will tell you which one is problematic or they may both may be problematic.
Pull and post your codes......
Pull and post your codes......
Continuing to repeat the same procedure over and over expecting a different result, will NOT fix the underlying issue. OP: Start with the right side fuel tank sender assembly first, as it has historically proven to be the most problematic of the two when a chronic problem like this happens.
Note: I replaced my right side unit several YEARS ago and have never had a problem since. Not even one time. I also ONLY use premium fuel from a top tier manufacturer. My preference is either Shell OR Chevron/Texaco. The only time I add Techron is at oil change time, purely as a preventive maintenance measure.
Safety Car
Joined: Dec 2011
Posts: 4,704
Likes: 239
From: Redondo Beach CA
THere is also a service memo on this , reportedly a reprogram of the computer will also do the trick.
I have the same deal on my 03 , so have been following the posts about this for a while. JUst reading, not fixing.
I seems the techtron fix will only work if you have poor gas, which I think you can only pedal in economic hardship zones, exempt from federal air quality controls, which is not New Jersey, last tine I checked.
I live in California, and wasted a lot of money before it dawned on me that my car has been running only top tier gas , which has that additive, for years , and the successful results were reported from a lot of guys without smog equipment and with gas secured from the quick mart.
I have the same deal on my 03 , so have been following the posts about this for a while. JUst reading, not fixing.
I seems the techtron fix will only work if you have poor gas, which I think you can only pedal in economic hardship zones, exempt from federal air quality controls, which is not New Jersey, last tine I checked.
I live in California, and wasted a lot of money before it dawned on me that my car has been running only top tier gas , which has that additive, for years , and the successful results were reported from a lot of guys without smog equipment and with gas secured from the quick mart.
