Question about 1996 Ford F150 Regular Cab

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96 f150 fuel issue

Rear tank pump was replaced got truck back switched to front died out checked switch a jumper wire installed on switch wrong replaced switch relay now have power to pump but guage is pinned and pump won't run bad pump?

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If gauge is reading over full sounds like no ground wire could be broken

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I have a 1996 f150 and I had the same problem. I finally found out that the rear fuel pump is the main pump, and if it goes out then the front pump will not work either. There is a groud that both pump share on the rear cross member. If you are not getting good connection with the ground the fuel pumps will not work. Also if you replace the rear pump and it still does not work then your problem could be the fuel tank selector switch, it acts as a relay if it goes out then neither pump will work.

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You could check the fuel filter (assuming there are two fuel filters, one for each tank)...but otherwise it sounds like a fuel pump problem, or possibly an obstruction in the switching mechanism for the two tanks, or an obstruction in the line itself. Hope that helps!

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