Fuel gauge acting up

[PUNKYOU007]

For the past week my fuel gauge has been giving me some troubles. First thing I had noticed was that just after filling my truck up a couple miles down the road my fuel light came on and the gas gauge was on Empty. After a min or so it went back up to full...then later that day it dropped down to half a tank and a few mins later went back to full again.

This has happened just about every time I am driving, some times it will drop down to empty and some times it will only drop to half a tank. I have not noticed anything different going on with my truck that I can relate the issue to. Anyone have any experience with this issue.

 

[DeepSeaFish]

Sounds like a sending unit going bad. Try adding a good fuel additive on your next full tank and drive a good 200 + miles to let it work in. It's possible you may have a lot of carbon build up on the sending unit contacts. If this doesn't work, your sending unit is probably bad. Good luck!

Dave

 

[jdj71]

As deepseafish said, probably the sending unit. I think you have to drop the gas tank to gain access to the sending unit. Mine is doing the same thing for about a month now. Pretty pricey job( in Canada that is)

 

[bankswood]

if you are going to drop the tank might as well replace the entire fuel pump.

 

[ATL]

an ac delco pump should be 250-300 and the job is something anybody willing to turn a wrench can do. itll prob take 4-6 hrs(6 if this is your first time doing a pump) so it can be done on a nice saturday or sunday. only thing that gave me a hard time with the job is the fuel lines on front side of the tank. they are simple connections, i just couldnt see them, had to reach back there and feel around alittle

 

[chauncey0337]

if you are going to drop the tank might as well replace the entire fuel pump.

Yeah, in some cases, they come as one unit.

 

[Riff Raff]

bump

any more news on this

today my 2001 tahoe had a full tank

then all of a sudden it dropped to E and the low fuel light came on

but went back and forth about 3 times

full to E

i'm guessing my fuel pump might be going out

any suggestions????????