fuel guage problems

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Apr 22, 2007 | 09:34 PM

4rdrules

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Joined: Dec 2006

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From: Tennessee

fuel guage problems

I have read on numerous forums about fuel guages not working. 86 f-150 swb 4x4 302 efi. dropped my rear tank today cleaned everything including the ring that lock's down the new sending unit to the tank. Thought i had a grounding problem. The guage climbs as the tank get's empty and reads e when full? any ideas

Apr 23, 2007 | 04:35 AM

streethealer

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Joined: Mar 2007

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From: Medina TN

Any chance that the polarity on the sending unit is reversed? Other than that, it sounds like you needs a new one... Uh Oh, I should have read closer, you already have a new one, sorry

Apr 23, 2007 | 06:05 AM

lariat97

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Joined: Jun 2005

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From: North west La

I agree on the polarity. You must have the wires reversed.

Apr 23, 2007 | 07:51 PM

4rdrules

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Joined: Dec 2006

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From: Tennessee

It is impossible to reverse the polarity on mine since the 4 wires that go to the tank are encased in a plastic housing and only fit on one way. I thought the wires were reversed myself and tried to hook it up 180 degrees from where it was the harness would not fit. any other suggestions?