Fuel pump problem

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Dec 26, 2015 | 05:29 PM

Michael Hooton

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New User

Joined: Dec 2015

Posts: 7

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Fuel pump problem

Just changed the fuel pumps on a 89 ford bronco EFI 5 speed manual 302 and now they won't work when it's cold but they will work when it is in the shop can't figure out the problem.

Dec 26, 2015 | 06:02 PM

NASSTY

Cargo Master

Joined: Feb 2007

Posts: 2,474

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From: ME

When I put a new tank in my rig it ran for a few days then quit. Then a couple days later it ran for a day or so and quit. After many hours of troubleshooting, it ended up being a bad connection on the plug to the pump. It was a little corroded but packed with dried up grease. I cleaned up the connectors and it's been fine for a couple years now. It may not be your issue but it may be worth checking??

Dec 27, 2015 | 12:55 PM

My4Fordtrucks

Hotshot

Joined: Jun 2015

Posts: 12,870

Likes: 2,443

When I bought my '89 F150 a couple years ago, the connections at the fuel pump relay on the driver's fender where corroded causing the pumps to shut off.

Dec 28, 2015 | 01:08 AM

Tim Hodgson

Fleet Mechanic

Joined: Mar 2009

Posts: 1,856

Likes: 52

From: Sacramento Delta, CA

Michael: You could start on page 3 here or read the entire thread. But bottom line is don't use dielectric grease. Do use contact cleaner. Then do use contact enhancer:

https://www.ford-trucks.com/forums/1...o-files-3.html