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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

       
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Old 06-12-2006, 06:27 PM   #1 (permalink)
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Fuel gauge erratic

Hello,

When I first fill the tank, the fuel gauge acts normally. When it gets down to about 1/2 a tank, it flops all the way to the right and stays there until the tank is almost empty. Then it acts normally again. Is this a float problem? How hard is this to fix?

Thanks.
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Old 06-12-2006, 08:26 PM   #2 (permalink)
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Re: Fuel gauge erratic

Mine has been doing that for years and years and years...first the front tank then the rear.
Think it's the sender...cure = drop the tanks [img]/ubbthreads/images/graemlins/biggrin.gif[/img], screw that, I'm use to it [img]/ubbthreads/images/graemlins/vomit.gif[/img]
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Old 06-12-2006, 09:51 PM   #3 (permalink)
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Re: Fuel gauge erratic

I think LMCtruck has replacement parts order a catalogue......
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Old 06-12-2006, 11:05 PM   #4 (permalink)
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Re: Fuel gauge erratic

Mine started doing the same thing 2 weeks ago. I don't think it could be the sender because I just replaced it last year about 10,000 miles ago. Mine was working perfect until the ABS fuse blew 2 weeks ago [img]/ubbthreads/images/graemlins/confused.gif[/img] [img]/ubbthreads/images/graemlins/confused.gif[/img]?
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Old 06-13-2006, 06:02 AM   #5 (permalink)
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Re: Fuel gauge erratic

the guage going full shows a loss of resistance, so it's either sender or wiring problems...
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Old 06-13-2006, 01:40 PM   #6 (permalink)
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Re: Fuel gauge erratic

My was doing the exact thing for a real long time.Wasn't to worried about it.Now it only reads off the front tank and when I touch the brake it the needle on the guage bounces around.Could this be the sender(s)or guage?Or the fuel selector valve on frame?I'm the s$%*s on electrical.
Thanks
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Old 06-13-2006, 02:03 PM   #7 (permalink)
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Re: Fuel gauge erratic

That sounds more like a problem in the dash printed circuit more than the sender itself.
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