Gas gauge
Thread Starter
Safety Car
Joined: Apr 2012
Posts: 4,077
Likes: 240
From: Houston TX
Gas gauge
So the problem has just recently showed up. I'm working with a 2007 ZO6 with 30K easy miles on it. The gauge will go to full when i gas it up and then go to just before it reaches one half of a tank and then it stops. Won't go any lower. And since I don't drive it all the time it has caused me to run out of gas twice now. Won't happen again as now I'm on to it. So what if anything do you guys know about this issue?
Thanks!!
Thanks!!
Le Mans Master
Joined: Dec 2004
Posts: 5,492
Likes: 808
From: West coast CA
So the problem has just recently showed up. I'm working with a 2007 ZO6 with 30K easy miles on it. The gauge will go to full when i gas it up and then go to just before it reaches one half of a tank and then it stops. Won't go any lower. And since I don't drive it all the time it has caused me to run out of gas twice now. Won't happen again as now I'm on to it. So what if anything do you guys know about this issue?
Thanks!!
Thanks!!
Are you getting a check engine light and "Service Fuel System" message on the DIC? If not, your car's failure mode is unusual. Examination of the fuel level signals would tell you more.
The proper fix requires dropping and disassembling the fuel tanks, which is expensive, so you might as well try the Techron first.
thing knower
Joined: Mar 2017
Posts: 3,404
Likes: 942
From: wpb
techron or lucas.... run it down to half tank and fill it up a couple times, will probably "unstick" after that...
remember that there are two fuel sensors... one in each side... the venturi pump keeps the fuel level the same in both tanks...
does the fuel gauge move as soon as you start putting fuel in? or does it only move after you've put at least 9 gal in?
-drew
remember that there are two fuel sensors... one in each side... the venturi pump keeps the fuel level the same in both tanks...
does the fuel gauge move as soon as you start putting fuel in? or does it only move after you've put at least 9 gal in?
-drew
Le Mans Master
Joined: Dec 2004
Posts: 5,492
Likes: 808
From: West coast CA
Melting Slicks
Joined: Jul 2012
Posts: 3,373
Likes: 62
Based on the mileage on the car it probably sits, or has sat a lot, the thing not to do is let it sit with an empty right tank as it allows the air in the tank to dry out and corrode the sending unit. Mine did the same thing, and I did as noted above, run Techron thru it a couple times and keep the tank as full as possible, especially if it sits for any time. Mine has not acted up since I started this regimen (knock on wood).
Thread Starter
Safety Car
Joined: Apr 2012
Posts: 4,077
Likes: 240
From: Houston TX
One of your fuel level sensors (probably the right one) is likely dirty, worn, or stuck.
Are you getting a check engine light and "Service Fuel System" message on the DIC? If not, your car's failure mode is unusual. Examination of the fuel level signals would tell you more.
The proper fix requires dropping and disassembling the fuel tanks, which is expensive, so you might as well try the Techron first.
Are you getting a check engine light and "Service Fuel System" message on the DIC? If not, your car's failure mode is unusual. Examination of the fuel level signals would tell you more.
The proper fix requires dropping and disassembling the fuel tanks, which is expensive, so you might as well try the Techron first.
Last edited by meanjoe; Jan 7, 2021 at 05:55 PM.
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