gas gauge stuck

[kyredneck13]

recently the gas gauge in my 87 has been staying on full, not going down till the reserve light comes on. since it has been in and out of the shop since ive had it, i would rather try to tackle this myself. if anyone has any advice on this please help. thank you all.

im thinkin stuck float??

 

[vetteboy86]

Yeah I would think the sending unit or something would be the culprit. Seems odd thought that the reserve light comes on even when it reads full. Kind of like if one part of the unit says it is full, how can the other part determine it is almost empty. I guess it is possible these are seperate. Either way I am not sure how the dash determines how much gas is in there. I know mine is off sometimes, staying on fuel for two days, and then dropping a quarter of a tank in one day.

Good Luck,
Craig

 

[ßill]

In my 90 there is a plastic hose clamp that clamps the hose from the fuel pump to the metal tube leaving the tank. The clamp had rotated such that it was binding the float arm in the full position. If this is the problem, relocating the clamp fixes it.
Good luck

 

[nyernga]

Removal of the fuel pump/sending unit takes about 30 minutes. Not a really hard job at all. I recommend not smoking however when doing it. ;squint:

 

[ATL 84]

I concur, it is the sending unit.

 

[Z06Marty]

Can you buy the sending unit by itself or is it part of the fuel pump/sending unit? Thanks, Marty

 

[I_R_DA_ONE]

the sending unit will run you about $200.00 but you may find one on eBay for a lot less...eBay even has new ones for about half price over a dealer..
Mike R