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Thread: 454 TBI Swap 78 K30 Trouble with TunerproRT and Winaldl, etc.

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  1. #1
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    Quote Originally Posted by brian617 View Post
    Which pin in the DLC connector is your serial data wire in? E or M?



    Gotya, pulled it open again on the serial cable, pulling ALDL data from pin E. Pretty sure that is one problem, I need to be getting data from pin M, with the 8192 baud, newer ECM?

    Can pin M and E be wired together, so that the cable will work with either?>

  2. #2
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    interface2.gif

    This is how the serial cable is wired. Instead the wire that goes to Pin E needs to go to pin M ?> Can E and M be wired together or do i need to use the two transistor method below?

    cablewires.gif

  3. #3
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    Reset idle to 850, and re adjusted tps so it's back at .58v at idle all with iac closed.

    Reset iac by running engine for 5 secs, off for 10 and then back on. Truck will hardly even stay running long enough to check timing. Timing at 20 degrees or so. About 1/4 advanced from end of scale. Last digit on scale is 16, plus 1/8" after plus the following 1/4".

  4. #4
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    Quote Originally Posted by 5cottymac View Post

    Can pin M and E be wired together, so that the cable will work with either?>
    Just pull the wire out of ALDL socket and put it in proper location.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  5. #5
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    Quote Originally Posted by EagleMark View Post
    Just pull the wire out of ALDL socket and put it in proper location.
    No change, still no data stream

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