Gas gauge needle stuck on full???

[Benny]

How do i fix this? anyway to check it and see whats wrong, it was working perfectly fine, till i topped it off with gas (just got the car 2 weeks ago) and since then its been stuck on full. any help will do, thanks btw, the car is a 1995 240sx SE 5spd.

[Benny]

Have you tried the procedure described in the FAQ?

After that, you'll need to start checking electrical stuff, that procedure is outlined in the FSM.

what faq? i obviously am missing something :help

[br2819]

check the plate wire in the back of the gauge cluster it might be burnt out in some areas.

[Benny]

i disconnected the fuel pump and gauge wires and the gauge dropped to empty.. then i hooked it back up and it went back to full. my friend is an infinit cert. tech and he checked it out... said i need a fuel sending unit cause of too much resistance on it... he totally lost me... but anyhow.. is there anything else it might be? i checked the price on that part... $161!!

[Benny]

anyone?

[Benny]

Get an FSM. The entire procedure for testing your fuel system is outlined there in excruciating detail. It's too involved for anyone to transcribe for you here.

yeah, my buddy that checked it out has one, he owns an S14 also... is this a common thing? or how does this happen?

[WAbernethy]

Sounds to me like something mechanical. If you filled your tank up and it never went down, maybe the sender in the tank is stuck on full. I'd pull it out and have a looksie. Not sure how it works on these, I assume it's some kind of float. Just my .0199999.

[Benny]

ok, i checked it all out and nothing seems outta place or broken or burnt... my gas gauges just goes crazy now... full... empty.... 1/2... 3/4..... empty.... 1/4... full what can it be?????????????