And a Forum member for 11 years.
fuel shows empty
Drifting
Joined: Jun 2013
Posts: 1,960
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From: Shell Point (Crawfordville) Florida
I think maybe, just maybe, I've seen a few (30-40?) threads about this on here.
And a member since Feb 2006 has never heard of this problem?
GOOGLE and SEARCH is your friend.
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On the C5s, sulfur tends to build up on the fuel sending units and causes the gas gauge to read incorrectly. Something you can try that is relatively inexpensive is to run a bottle of Techron Concentrate through the next couple of tanks of gas and see if the gauge returns to proper working order. Techron can be bought at just about any auto parts store.
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Joined: May 2001
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Intermediate
Joined: Feb 2006
Posts: 30
Likes: 0
I will try the Techron. Thanks for the advice. My first Vette was a 62 I bought right out of high school. It would show full until almost empty then drop to empty. When it dropped, I knew I had to get to a gas station. Again, thanks for the help. This forum is great. Has helped my several times now.
Racer
Joined: Jan 2014
Posts: 357
Likes: 29
From: Central/Eastern NC North Carolina
Yeah. Its a well known problem.
Techtron and citco fuel really helped mine for over a year, But a week ago it was on 1/4 tank and my 01 vert started chugging like running out of gas again.
It took 18.5 gals to fill up! (proof my siphon jet transfer is workin).
I guess I'm going back to watching trip odo and filling up every 300 miles again...
It seems like replacing sending units is the safe way to go, but I think I'll use odo til I get confidence in gage again. Good luck with which ever approach you choose.
Techtron and citco fuel really helped mine for over a year, But a week ago it was on 1/4 tank and my 01 vert started chugging like running out of gas again.
It took 18.5 gals to fill up! (proof my siphon jet transfer is workin).
I guess I'm going back to watching trip odo and filling up every 300 miles again...
It seems like replacing sending units is the safe way to go, but I think I'll use odo til I get confidence in gage again. Good luck with which ever approach you choose.
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Melting Slicks
Joined: Jun 2013
Posts: 3,473
Likes: 691
From: West Virginia
As was said, search is your friend. Look for the TSB which GM put out which specifies a computer reflash to solve this problem. Techron may or may not ward it off but your baseline action ought to be to get the reflash done.
I had mine done when the TSB first came out and it went from the gauge crashing to zero at very regular intervals - cured by turning the car off for a few mins and restarting - to having never done it since (many years now). And it is mostly run on cheap supermarket gas.
I had mine done when the TSB first came out and it went from the gauge crashing to zero at very regular intervals - cured by turning the car off for a few mins and restarting - to having never done it since (many years now). And it is mostly run on cheap supermarket gas.
Racer
Joined: Jan 2014
Posts: 357
Likes: 29
From: Central/Eastern NC North Carolina
I read on an earlier thread that the reflash will overwrite a tune, so it has to be put back on afterwards.....
Anyone get the reflash lately?
I don't have a tune, can the dealer check the vin records to learn if the reflash was already done back in the day??
How about cost for the reflash? anyone know?
Anyone get the reflash lately?
I don't have a tune, can the dealer check the vin records to learn if the reflash was already done back in the day??
How about cost for the reflash? anyone know?
Melting Slicks
Joined: Jun 2013
Posts: 3,473
Likes: 691
From: West Virginia
I read on an earlier thread that the reflash will overwrite a tune, so it has to be put back on afterwards.....
Anyone get the reflash lately?
I don't have a tune, can the dealer check the vin records to learn if the reflash was already done back in the day??
How about cost for the reflash? anyone know?
Anyone get the reflash lately?
I don't have a tune, can the dealer check the vin records to learn if the reflash was already done back in the day??
How about cost for the reflash? anyone know?
info here: http://www.corvetteforum.com/forums/...-on-empty.html
Last edited by jackthelad; Jun 25, 2015 at 10:48 AM.
Drifting
Joined: Jan 2006
Posts: 1,726
Likes: 97
From: Castro Valley State of Insanity
My 02 Coupe has never given me a fuel level problem, however for the past 4 or 5 years the fuel gauge in my Eliminator deep V boat has been very erratic. After reading of similar problems and solutions on this forum, I started using Chevron gas which has Techron in the mix, and an occasional treatment of Techron concentrate in the boat, problem solved.
My fuel gauge is now working again like new, thanks to the forum for this easy and economical fix.
My fuel gauge is now working again like new, thanks to the forum for this easy and economical fix.
Last edited by Bubbletop409; Jun 27, 2015 at 02:06 AM.