fuel pump wont run after replacing with new pump
265

Asked by xxshane22xx Jul 04, 2014 at 06:07 PM about the 1998 Ford F-150

Question type: Maintenance & Repair

have a 98 f150 thought the pump died wouldn't start one day checked fuses and relays all good so figured had to be the pump. bought new pump tested and it works, so I replaced pump got it done went to start pump still not engaging... tested old pump at this time and it works also... GREAT... $$$.... so we tested power to pump and are getting voltage tested the reset switch and it too has power any thoughts on what else it could be...??? all my coworkers and I are stumped

11 Answers
143,705

T_S_T answered 9 years ago

Have you checked for fire at plug wire?

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265

xxshane22xx answered 9 years ago

yes we also checked that, it tries to crank but I still don't hear the pump turn on we just took the line off the pump and tried to turn over no fuel coming out

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143,705

T_S_T answered 9 years ago

If you have replaced all relay,s and fuse,s,could have a bad ecm/Brain.

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265

xxshane22xx answered 9 years ago

just was playing around and being that I was getting power to the pump I decided to test the ground so I cut the ground wire and hooked the ground that I ran from the neg. side of the battery and it fired right up. so turns out I had a bad ground...

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20

Mrmechanic2133 answered 7 years ago

My brother 96 Chevy I had been working also had a problem like yours. A bad ground was also the problem so I had sanded the rust off the cross member (where it was grounded with a bolt) and it has no problem firing up

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20

GuruTYKMB answered 5 years ago

im not even getting power to saftey reset anyone have any ideas

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20

Chaz answered 5 years ago

On these obs there is a fuel pump shut off button is shuts off all power to the fuel pump it is to the left of the brake pedal check for that

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GuruS4F2L answered 4 years ago

I have a 2013 Ford F-150 I being a new fuel pump is not turn on and the fuse is good

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