[Z06] Fuel Gauge?
Thread Starter
Racer
Joined: Jul 2007
Posts: 253
Likes: 0
From: north jersey New Jersey
Fuel Gauge?
I was driving my car today to a local car meet and im on a half tank of gas, once i arrive to the meet im still on about a half tank of gas then out of no where the low fuel light comes on and my check gauges light pops up and my gas gauge is below E but i know theirs still plenty of gas in it because i just put gas in it and the light wont go off and my gas meter wont go back to where it was. What can this be a broken gas gauge? Does this often happen to c5 z06? Someone please help me out.
Race Director
Joined: Nov 2000
Posts: 17,103
Likes: 39
From: stop the fun suckers
there is a lot of information if you search the c5 tech section for 'fuel gauge'. Its pretty common with C%'s and it usually has to do with sulfur deposits on the sending unit.. the cheapest way to get relief usually involves adding some techiron for a few tank fulls of gas.. the most expensive option is replace the senders.. which even after that is done its a good idea to add techiron every oil change or so.
Drifting
Joined: Oct 2006
Posts: 1,773
Likes: 2
From: San Diego CA
there is a lot of information if you search the c5 tech section for 'fuel gauge'. Its pretty common with C%'s and it usually has to do with sulfur deposits on the sending unit.. the cheapest way to get relief usually involves adding some techiron for a few tank fulls of gas.. the most expensive option is replace the senders.. which even after that is done its a good idea to add techiron every oil change or so.
I run Chevron gas which has Techron added to it, and have never had the problem. Make sure you use a top tier gas and it shouldn't reappear after you resolve it with some Techron additive.
Good luck....
Drifting
Joined: Oct 2006
Posts: 1,773
Likes: 2
From: San Diego CA
Depending on the quality of the gas you've been using (meaning how gunked up the sending unit is) you may need a couple of bottles to clear up the problem. After that, a top tier gas with Techron or an occasional bottle added to a fill up will keep it working....
Of course, the above will only work if the problem is in fact build-up on the sending unit (which is very common).
Good luck....
Race Director
Joined: Nov 2000
Posts: 17,103
Likes: 39
From: stop the fun suckers
I ended up replacing mine because they were still under warranty.. I had the tech save them so I could play with them and diagnose the issue.. I hooked up a voltage meter and started playing..
under magnification you could see all the GUNK glued to the printed sending board. a tooth brush and light spirits cleaned it right up and they seemed to check out..
under magnification you could see all the GUNK glued to the printed sending board. a tooth brush and light spirits cleaned it right up and they seemed to check out..
Burning Brakes
Joined: Aug 2006
Posts: 903
Likes: 1
From: Burbank CA
when I bought my '04z it had been in storage for a year and was running rough at idle. 2 bottles of techron with a half tank of gas and she smoothed out after about 40 miles. You can run a couple bottles in one tank for a little extra cleaning strength.
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