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post #1 of (permalink) Old 08-03-2003, 12:30 PM Thread Starter
 
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fuel gauge sender update - more wierdness

Now that I had some time to diagnose the inaccuracies of my fuel sender I'm no closer to a solution, but here's some interesting data. I checked all the ground points, meaning that I used an ohmeter to check for continuity between my negative battery post on random points on the engine, frame, chasis, dash, the gauge itself, and the sender itself. All seem to have a good connection. Here's the wierd part: I noticed that my gauge reads differently (more full) when the engine is running. It seems it gives a more accurate reading when ignition is on, but the engine is not running. I checked this out. Sure enough, I was getting 60 ohms before ignition, and a reading I didn't even understand at idle. (the meter just reads a 1 way over to the left - it's digital. I need to dig up the instructions to see what this even means but it can't be good) Any suggestions on this set of information? Ground stayed stable before, during, and after ignition. Thanks

-JL
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post #2 of (permalink) Old 08-03-2003, 12:36 PM
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Re: fuel gauge sender update - more wierdness

1. Checking with an Ohm meter can be pointless.
2. The Jeep's constanly creaking, moving and twisting.
3. This moves rivets, plates, etc.
4. And this ALL affects the grounds.
5. May I suggest running a ground wrie from the dash area,
6. To the tank...
7. Then you know the ground is good.
8. Otherwise... you're just guessing...
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post #3 of (permalink) Old 08-03-2003, 12:40 PM Thread Starter
 
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Re: fuel gauge sender update - more wierdness

Sounds as good a place as any to start. It's not the first time I've bypassed the harness and wired something direct so I know it's right. Thanks for the suggestion.

-JL
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