1995 E350 fuel gauge problem

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Jun 20, 2015 | 05:10 PM

86scotty

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Joined: May 2011

Posts: 366

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From: the old home place

1995 E350 fuel gauge problem

I've found a little about this on a few forums. My fuel gauge is reading all over the place. At first I though the float was hung in the wiring, which it can do when full (and float is at top, closest to the wiring). This, of course, is not easy to verify. I'm not so sure that's my problem though. It goes way past full (pinned to the right) sometimes when I fill up or start the van, but sometimes it moves up and down and seems to be inaccurate judging by miles driven on a tank. I've heard this can be a bad ground, but how would I check it? Would it most likely be the ground point at the tank (meaning in the wiring plug at the top of the fuel pump), or on the other end? Anyone have any idea where the ground point or wiring runs from the tank? Is there a way to probe the fuel sender wiring without dropping the tank?

Jun 21, 2015 | 09:29 AM

jimandnena

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Joined: Mar 2014

Posts: 906

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Quote:

Originally Posted by 86scotty

The best bet would be to crawl under it, locate the wire harness from the tank (it is usually not bundled with anything until further down the chassis), peel a bit of the wrapping open and look for ground wires, typically solid black but no guarantee. Get an VOM and measure the resistance from the negative battery terminal to the suspected ground wires. Yank the bundle around a bit to locate breaks/corrosion problems.

Wiring problems are always a pain, especially intermittent ones. Good luck.
jim