fuel gauge problems

[Reecehenry]

So i bought my pathy about a year ago and since then ive done a lot to it (bigger tires, lift, fender trim, ect.) and ever since the day i bought it the fuel gauge has been reading wrong... when i fill it up it reads full, but after i use about an eighth of a tank it reads like half full then about another eighth im at a quarter, and it sits at a quarter until it actually has about a quarter, then it starts to read correctly until its on E... can anyone diagnose this problem?

 

thanks for any help

 

-Reece

[Manik]

I have the EXACT same issue with my pathy and the issue with it is the fuel level sender in the fuel tank. If you have a volt/ohm meter you can test it. I have the FSM for up to 1995, the resistance should be approximately 3 ohms to 94 ohms. it's really easy to pull and test, depending on what year your rig is. My 95 has a fuel pump access plate under the back carpet so I don't have to drop the tank to get to it. Any earlier models should be the same. hope this helps.

[Towncivilian]

If the issue is sulfur buildup on the fuel level sending unit, Chevron Techron fuel system cleaner may help clear it up.

[Reecehenry]

thanks for the responses... manik, is the access plate under the carpet in the trunk area (behind the back seats)?

And if i test it and it reads bad, do i just replace it?

[Reecehenry]

thanks for the responses... manik, is the access plate under the carpet in the trunk area (behind the back seats)?

And if i test it and it reads bad, do i just replace it?

[Reecehenry]

lol i dont know why that posted twice.....

[Yendor]

Can you post some pics when you get in there please?