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    cobra1967's Avatar
    cobra1967 Posts: 8, Reputation: 2
    New Member
    		  
    #1

    Mar 31, 2008, 12:42 PM
    Engine and tranny problems, maybe comuter?
    I am having some trouble figuring this one out 100%. I have just recently swapped engines in my 1989 gt cobra (Ford Mustang). The engine that was in it was a 5.0l HO V8, but the engine that I have just recently put in it is just a regular 5.0l v8. I bring this up because I believe that my problem may have something to do with the computer that is in the car. Everything, mechanically, is done and is 100%.

    My car is idleing very well, steady at about 800 RPM's. But as soon as I engage my transmission into reverse or into drive, the car will either stall while sitting there, or whenever I go to give it some gas. I have checked all of my vacuum lines, and I even re-checked my timing, but everything is at its full potential. I believe my problem may be consistent with my computer, but the electronics are my weak point, can anyone give me some help with this one?
    Thanks,
    Cobra1967
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Mar 31, 2008, 01:07 PM
    I believe your diagnosis is correct. You may need to change the PCM, wiring harness, etc. for your new engine. Electrical system compatibility is often initially overlooked on engine/transmission swaps.
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