fuel pump wont run unless u jump test plug

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Feb 17, 2008 | 02:56 PM

deeznuts822

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Joined: Feb 2008

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From: ohio

fuel pump wont run unless u jump test plug

Got a 88 ford with 302 wont run fuel pump unless i ground the test plug on fender well. what would cause this?

Feb 17, 2008 | 06:29 PM

subford

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From: Easton,Ks

Quote:

Originally Posted by deeznuts822

Got a 88 ford with 302 wont run fuel pump unless i ground the test plug on fender well. what would cause this?

Can you tell me what you mean by it wont run?

Does it just run for one second and stop when you turn on the key?
If so that is normal.
Does the engine start and run?

Does the small black wire on the ground post of the battery have a good connection?
This wire goes through a one-wire connector and then turns into a black wire with a green stripe.

Feb 17, 2008 | 07:01 PM

mhg

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From: savannah,ga

bad ground some where
you will need a good wiring diagram

Feb 17, 2008 | 08:16 PM

mantta

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Joined: Feb 2001

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From: Keweenaw Bay, MI

I had the same problem with my 88 some time ago. It was the ground wire that goes to the negative battery post, not the cable but the small wire, it grounds your fuel pump circuit.

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