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Thread: 4.0 PCM's

  1. #1

    4.0 PCM's

    I have installed a 2007 Mustang 4.0 with the 5R55S trans in my 31 Ford pickup. The local Mustang Performance shop suggested I go to an older PCM system as the 2007 requires the PCM, all wiring harness, gauge cluster, and a way around the PATS. My question is if I get an older PCM ( 96-99) from an Explorer what do I need other than the PCM, eng/trans harness, and the dash harness to get the Diagnostic Plug and ignition switch? Also will that PCM run my transmission? Thanks for any advise

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  3. #2
    ┬─┬ ノ( ゜-゜ノ) triple_l82's Avatar
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    I'm honestly not sure as I'm not a mustang guru but I do know my moms old 06 mustang was supposedly a good one for a ECM. I think they meant older mustang ECM and not explorer. The 5 speed never came in the explorer as far as I know and I don't see how a 4 speed Tcm would control a 5 speed trans.
    Larry:
    1996 camaro- Ole Blue. the very very very long time consuming project car
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    1979 Mustang Cobra - dad passed and left it to me, gonna be a clean street/strip car
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