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1993 F250 bad PCM? Symptoms

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  #16  
Old 08-02-2014, 02:26 AM
Billy nilly Billy nilly is offline
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I know this is an old thread but I'm having the same problem with my 1994 van with the 351 in it. th

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Originally Posted by Lead Head View Post
A chattering PCM relay, or one that does not make a complete connection can prevent the processor in the computer from starting up. If the processor doesn't start, the fuel pump keeps running.

The relays cost next to nothing, and it's a good place to start rather than dropping $150 on a new computer.
My fuel pump runs continue when the check engine light comes on it wants to take off in second gear ,blowes black smoke, neutral drops its self at 70 mph with the cruise set. Ya wow is an understated pcm mabe?
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Old 08-02-2014, 10:17 AM
Lead Head Lead Head is offline
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Please make a new thread, as your problems are a bit different.
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Needs a lot of work, including some rot on the body, but shes getting there.
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