94 mustang idle probs after new motor and H/C/I

Discussion in '94-95 5.0 - Specific' started by urtoast, Jul 29, 2007.

  1. urtoast

    urtoast New Member

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    Just put a new motor in a 94 mustang with tfs stage 1 cam and twisted wedge heads and street heat intake. the car starts and runs but dies won't idle without foot on gas......I know there is a idle relearn to do on these because it idled fine before motor was removed and before disconnecting battery. what are the exact proper steps to do this?? and with all these mods ,I've read about the nightmares with the sn-95's and mods..... will it be okay or will it have to be tuned via a chip?
     
  2. quickstang_1994

    quickstang_1994 Well-Known Member

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    I think its in the sticky's. Very possible you are going to need a tune.
     
  3. OnyxCobra

    OnyxCobra Legend

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    It won't idle well because of the cam, the 94/95 computers are pretty vacuum sensitive. After doing motor work like that you should really look into getting a tune, not only will it run a lot better but you'll make a lot more power and wont run the risk of ruining something.
     
  4. 95Grandtouring5.0

    95Grandtouring5.0 Well-Known Member

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    In a nut shell thats what you need to do, also if you went with bigger injectors you need to get a maf that is calibrated for that size injector.
     
  5. ryclef331

    ryclef331 Well-Known Member

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    It can be set up to idle but its tricky. The learning curve of the ECUs is what will jack your shit up. The OPTIMAL way is a tune though.
     
  6. 2slo95fiveoh

    2slo95fiveoh Well-Known Member

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    i just got my car out of the shop after getting trick flow h/c/i bolted on to a freshened block, and they adjusted the TPS sensor and i have
    an idle at about 1K. i am planning on getting it tuned however, but i was just saying until you can get it tuned, there are easier alternatives