Another Fuel Sensor issue
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Another Fuel Sensor issue
I have 2 C6's an 05 and an 07 and the 07 is having the dreaded issue with an erratic gas gauge. I am 90% sure it is the passenger side sensor and have looked at all the threads and have done the Techron fuel system cleaner twice now and the problem got better both times.
My question is has anyone had any long term success with the fuel Techron? The reason I ask is I am not completely sure it really did anything and it is possible the gauge self corrected after 20-30 miles.
Ihe first time this happened I ran the tank to nearly empty so I added the Techron and it went away. I decided to run the tank fairly low again to see what would happen and the next fill up the problem came back so I added another round of Techron and once again the problem went away with in 20-30 miles.
I plan on not going below a 1/4 tank for the next fill up and see if that helps but would like to know if I just need to plan on dropping the tanks in the near future. I have the manual and it doesn't look all that bad but I relay don't have the time at the moment so any experience with the fuel cleaner would be welcome.
Thanks in advance FD2BLK
My question is has anyone had any long term success with the fuel Techron? The reason I ask is I am not completely sure it really did anything and it is possible the gauge self corrected after 20-30 miles.
Ihe first time this happened I ran the tank to nearly empty so I added the Techron and it went away. I decided to run the tank fairly low again to see what would happen and the next fill up the problem came back so I added another round of Techron and once again the problem went away with in 20-30 miles.
I plan on not going below a 1/4 tank for the next fill up and see if that helps but would like to know if I just need to plan on dropping the tanks in the near future. I have the manual and it doesn't look all that bad but I relay don't have the time at the moment so any experience with the fuel cleaner would be welcome.
Thanks in advance FD2BLK
Team Owner
Joined: Sep 2000
Posts: 25,019
Likes: 2,712
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Using Top Tier gas all the time, and adding 1/2 bottle of Techron every 7k miles (don't want too much cleaner), we've had no problems over three Corvettes (2001-2006-2009) and 200k miles.
Many people have reported the Techron treatment fixes their problem, a few have had it fail.
Many people have reported the Techron treatment fixes their problem, a few have had it fail.
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
I have never had an issue either 175k on my 01 no problems but it looks like a fairly common issue with the C6s.
Found a you tube vid that has me thinking the worst the vid showed the copper leads on the sensor wore slam off
Found a you tube vid that has me thinking the worst the vid showed the copper leads on the sensor wore slam off
Drifting
Joined: Apr 2011
Posts: 1,540
Likes: 79
From: Houston, Tx
St. Jude Donor '11-'12-'13-'14
If you add the techron to an empty tank it all goes in the drive side tank. The drivers side tank fills first and then the passenger side fills. I fill to 8 or 10 gals and then add the techron so it goes in the passenger side first and then it transfers to the drivers side as the tank goes down. If I had a problem I would put a bottle in first and then another after I finished so to be sure to clean both tanks.
Pro
Joined: Jun 2007
Posts: 647
Likes: 135
From: Big Canoe Georgia
I have the dreaded issue as well. Every time I fill it up and then start the car the gas gauge gets erratic. However if I drive the equivalent of consuming about 3/4 of one gallon of gas BEFORE shutting the engine down the issue goes away.
On the other hand, if I shut the car down before the issue self corrects the next start I will get the CEL. Then after I eventually burn 3/4 gallon AND THEN AFTER THAT start and stop the car 2-3 times, all is good again. Until the next fill up of course. I think you need to drive at least 5-10 minutes for each of the 2-3 successful starts and stops.
I've tried Techron but not like a few have commented on this thread. I ran the tank low, added the Techron, AND THEN filled up. No positive results. I may try what others have suggested in this post wrt Techron.
On the other hand, if I shut the car down before the issue self corrects the next start I will get the CEL. Then after I eventually burn 3/4 gallon AND THEN AFTER THAT start and stop the car 2-3 times, all is good again. Until the next fill up of course. I think you need to drive at least 5-10 minutes for each of the 2-3 successful starts and stops.
I've tried Techron but not like a few have commented on this thread. I ran the tank low, added the Techron, AND THEN filled up. No positive results. I may try what others have suggested in this post wrt Techron.
Advanced
Joined: Oct 2014
Posts: 85
Likes: 3
From: Roanoke, VA
My 07 with 95k has been doing it for ~10k miles. If I fill with over half a tank left, it doesn't do it. Bought 3 bottles of the cleaner and it didn't help at all. I added them with the tank near empty, for 3 consecutive fillings.
Last edited by cthompson07; Mar 7, 2016 at 09:27 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Thanks for all the reply's, I went ahead and ordered both sensor Kits and it looks like I will have a job for the weekend.
I see no point of dropping one tank only to have the other sensor fail a year from now.
I am curios as to why the problem seems to happen to the passengers side tank way more often though.
I see no point of dropping one tank only to have the other sensor fail a year from now.
I am curios as to why the problem seems to happen to the passengers side tank way more often though.
Drifting
Joined: Jul 2011
Posts: 1,825
Likes: 443
From: Boca Raton Florida
Originally Posted by simplegto
If you add the techron to an empty tank it all goes in the drive side tank. The drivers side tank fills first and then the passenger side fills. I fill to 8 or 10 gals and then add the techron so it goes in the passenger side first and then it transfers to the drivers side as the tank goes down. If I had a problem I would put a bottle in first and then another after I finished so to be sure to clean both tanks.
i am sure they equally work as the fuel from both thanks are being mingled and mixed continuously.
Instructor
Joined: Jan 2008
Posts: 136
Likes: 30
From: Peoria Arizona
Thanks for all the reply's, I went ahead and ordered both sensor Kits and it looks like I will have a job for the weekend.
I see no point of dropping one tank only to have the other sensor fail a year from now.
I am curios as to why the problem seems to happen to the passengers side tank way more often though.
I see no point of dropping one tank only to have the other sensor fail a year from now.
I am curios as to why the problem seems to happen to the passengers side tank way more often though.
Drifting
Joined: Jul 2011
Posts: 1,825
Likes: 443
From: Boca Raton Florida
Originally Posted by FD2BLK
Thanks for all the reply's, I went ahead and ordered both sensor Kits and it looks like I will have a job for the weekend.
I see no point of dropping one tank only to have the other sensor fail a year from now.
I am curios as to why the problem seems to happen to the passengers side tank way more often though.
I see no point of dropping one tank only to have the other sensor fail a year from now.
I am curios as to why the problem seems to happen to the passengers side tank way more often though.