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Re: 1987 Ford F-150 4.9 A/T and MODIS
Posted to Technical Discussion Forum on 7/21/2012 1 Reply

I'm not a Ford specialists, but I've seen a few.

Check fuel pressure first. Ford is known for regulators sticking intermittently, causing high fuel pressure.

Check the MAP sensor. If memory serves it should be about 158 hz KOEO.

We worked on one vehicle ... Login to read more.

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