Question about 1989 Ford F 150

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F 250 ford

I have a f 250 ford 1990 sometimes runs sometimes does not. someone said the brainbox needs to be replace. where is the brain box located?

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Before you replace the ECU check to see that the fuel pump relay is working. It will be on the drivers side under the hood located just above the fenderwell. It should be mounted on a plastic piece with two other relays beside it. This relay is only about $ 16.00.

Posted on Feb 18, 2009

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