94 won't start HELP!!!

Discussion in '94-95 5.0 - Specific' started by Mac65, May 23, 2014.

  1. Mac65

    Mac65 New Member

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    Need some help!!!

    I just installed a 90 mm lightning maf a sct 4 bank chip and replaced my fuel pump to a high flow. Now the car wont start!!! My car is a 94 gt with a new motor. It was working well the last time I was working on it, I couldn't get my idle down because of the factory maf. The fuel pressure is at 45 lbs.
    Any pointers would be appreciated.
     
  2. toyman

    toyman Active Member

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    What needed tuning and what are the four tunes on the chip?
     
  3. Mac65

    Mac65 New Member

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    The guy that tuned the chip and calibrated my maf didn't give me any info on the tunes.
     
  4. Mac65

    Mac65 New Member

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    I just got some info on the tune. Bank 0 will be a basically stock tune. bank 1 is for general street driving, 2 is a more performance oriented tune, and bank 3 is a racing tune.
     
  5. rz5.0

    rz5.0 Legend

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    You tune for the bigger injectors. Lmaf can not be "calibrated" for any size injectors. Your tune has to compensate for both bigger injectors and different maf curve. .

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  6. rz5.0

    rz5.0 Legend

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    Is it a bama tune. .

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  7. Mac65

    Mac65 New Member

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    A guy on our forum did the tune for me, I assumed that the maf was calibrated my fault on that one. I'm going to try again this morning I think the selector switch was in the wrong position. I'll put it on position zero.
     
  8. rz5.0

    rz5.0 Legend

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    Ok. He just tuned for it then. . He prob just put the right maf curve. .

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  9. rz5.0

    rz5.0 Legend

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    Don't start it on 0 tune.. verify everything else make sure your distributor is stabbed properly. . Not only does it control timing but it also does the injectors timing..

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  10. Mac65

    Mac65 New Member

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    This has been a long project and now I,m so close just a bit worried......
     
  11. rz5.0

    rz5.0 Legend

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    Did adder write your tune?

    Enviado usando mi SHP-L710 usando TapaTalk
     
  12. Mac65

    Mac65 New Member

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    Last weekend It was running really well, it took me 3 or 4 times to stab the distributor. I was having trouble with my idle, that's when Keith made my chip for me.
     
  13. Mac65

    Mac65 New Member

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    Keith Varin in Rhode Island did the tune @ 64 bit tuning
     
  14. rz5.0

    rz5.0 Legend

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    So it ran fine till you put the chip in.. did you clean the j3 port really good. . Will it start on the stock tune or with the chip out..

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  15. rz5.0

    rz5.0 Legend

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    [MENTION=8201]Addermk2[/MENTION]

    Enviado usando mi SHP-L710 usando TapaTalk
     
  16. Mac65

    Mac65 New Member

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    I cleaned the ecm with alcohol, made sure all the contacts were clean. When I put the negative battery connector back on my rad fan was running, So I assume the chip was working. This morning If it doesn't start I'll remove the chip and try without it.
     
  17. rz5.0

    rz5.0 Legend

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    Your supposed to scrape the coating off it.. it has a film on it.. should go from silver to copper. If I remember right..

    Enviado usando mi SHP-L710 usando TapaTalk
     
  18. Mac65

    Mac65 New Member

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    I'll get some update at about noon. Cheers...
     
  19. Mac65

    Mac65 New Member

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    Here's were I'm at got her going, set the timing @ 10 degrees Set the idle at about 800 rpm. Took for her first drive when I come to a stop sign the idle hangs for about 25 seconds before it drops to 800. Also if I accelerate a bit hard I get a backfire. Other than that I feel like a pig in shit.....

     
  20. Addermk2

    Addermk2 Well-Known Member

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