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2005 Ford F-150

Question: will crank but no spark

Question

Visitor, 5.4L V8, Alma, WV, January 01, 2011, 03:17

truck shut off after running very rough. would not restart. replaced the cpu. replaced the cam sensor. have good fuel preasure. any ideas

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  • Answer #1

    delane 72 garage and body shop January 01, 2011, 18:27
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     Master

    ck crank shaft sensor put on computer maybe that will tell the old codes to find out what the problem is

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  • Answer #2

    DaveJHM January 01, 2011, 22:53
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     Master

    Replacing the PCM and cam sensor with no good diagnosis sounds like a huge waste of cash!

    Seriously, you really need to do some basic spark, fuel, air and exhaust diagnostic tests for a no-start before replacing parts.

    By the way, does your "THEFT" light flash in your instrument cluster while you crank?

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