Fuel Gauge

  
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Fuel Gauge

 
rhodge1 rhodge1
I watched Corvette Summer | Posts: 1 | Joined: 11/12
Posted: 11/17/12
03:33 PM

I have a 2000 rag top with a fuel gauge that works intermittently. When it drops and reads empty, the DIS on the dash reads low on fuel. Is this likely to be a faulty or warn out sending unit or a electrical problem? In your opinion is this something a novice car guy could repair?  

waynep71222 waynep71222
Duntov Incarnate | Posts: 241 | Joined: 04/12
Posted: 11/17/12
06:28 PM

hmm.. novice .. a few things... does anything else quit when the gauge acts up..???

lets like at the wiring diagram for the fuel sending units and fuel level sensors..

you will want to open this image in a new window..

0996B43f802434f9


i would probably want to check out ground connection G401... and the splice location where the sending units are grounded at..

0996B43f80243582

here is the other half of the splice block...

0996B43f80243583

could also be the sending units...

you are really going to need a corvette factory service manual... as it covers much more info than i can provide here.. and probably a 20 or 25 buck digital volt meter.. and some basic tools..

the reason i ask if anything else cut out.. is C5 models are plagued by dirty ignition contacts inside the switch..  they are cleanable with some work..

perhaps bob might have more hands on experience in these..

intermittents are very hard to find without something like a voltage drop test.. and a meter with min max functions.. so you can spot a GLitch..  

waynep71222 waynep71222
Duntov Incarnate | Posts: 241 | Joined: 04/12
Posted: 11/17/12
06:36 PM

G401 seems to be on the side of the frame rail near the left rear tire..

Frame Grounds

this is a splice block connector plug.. note some of the corrosion..


Chassisgroundconnectordisected004

Chassisgroundconnectordisected012  

waynep71222 waynep71222
Duntov Incarnate | Posts: 241 | Joined: 04/12
Posted: 11/17/12
06:37 PM

you may also want to clean the ground connections on the frame rail under the battery.. find the positive post.. look straight down.. there is a ring terminal on the frame.. that might need to be cleaned with a wire brush..