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88 GP SE A18 ECM Pin Out ?!?!?

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  • 88 GP SE A18 ECM Pin Out ?!?!?

    I posted this in the pushrod section, but I thought I'd try here too in case.

    I'm in the process of doing a turbo swap onto my 88 GP with a HM 282. I have all the mechanical done, but I'm having trouble with the ECM Pin outs. I have a FSM for my car, and it doesn't list a wire being at A18, where I want to put the wastegate solenoid wire, but sure enough there is. I've looked all through my manual and I cannot find what the hell A18 is in my car. I found one reference in the back that has all engine connectors, and it shows a black w/pink tracer being located there, but doesn't describe it in any way. Does anyone have any idea what this could be?

    Thanks,
    Jon

  • #2
    it might be something that is only covered in the TGP SUPPLEMENT. I dont have one of those, but maybe someone that does can chip in.

    For those years of cars, the main book only covers the BASE and SE cars. For the TGP and STE specifics, you need the SUPPLEMENT. I have the STE supplement, but it doeas not cover the TGP parts.
    Taylor
    1988 Olds Cutlass Supreme 3100 MPFI
    1990 Pontiac Grand Prix STE 3.1 MPFI
    1994 Olds Cutlass Supreme convertible
    1998 Lincoln Mark VIII
    "find something simple and complicate it"

    Comment


    • #3
      I went ahead and looked in my 1990 Grand Prix STE supplement. This is what is lists.

      A18 - BLK/PNK - AIR DIVERT SOLENOID.

      I believe this is the WASTEGATE in which you seek. For the solenoid itself, it lists A18 goes to the solenoid, and the other wire goes to the RT SIDE ELECTIRCAL CENTER to a 10 amp fuse (brown wire).

      I found this over in the DRIVEABILITY AND EMISSIONS section listed under the vin t (na 3.1 MPFI). Page 6E3-A-3
      Taylor
      1988 Olds Cutlass Supreme 3100 MPFI
      1990 Pontiac Grand Prix STE 3.1 MPFI
      1994 Olds Cutlass Supreme convertible
      1998 Lincoln Mark VIII
      "find something simple and complicate it"

      Comment


      • #4
        I found it. On my car it actually runs to the AIR pump since it's a manual. I have since removed that system in the swap, but i needed the pin out for the waste gate solenoid. My manual conveniently leaves it out. It list A1-A22 in order including the blanks except A18. It just skips from 17-19. Also, I could not find the AIR system in any of the driveablility and emissions sections. 6E3-A3 through A5 list everything in the engine bay, but makes no mention of the AIR system. Thanks for your help. Time to get an updated manual.

        Comment


        • #5
          I should have read a bit more in my book. It lists A18 as the AIR DIVERT CONTROL (M/T), so it is the AIR pump.

          Yeah. This is something that will most likely only be covered in the TGP - TURBO GRAND PRIX supplement. My supplement is for the STE - SPECIAL TOURING EDITION.
          Taylor
          1988 Olds Cutlass Supreme 3100 MPFI
          1990 Pontiac Grand Prix STE 3.1 MPFI
          1994 Olds Cutlass Supreme convertible
          1998 Lincoln Mark VIII
          "find something simple and complicate it"

          Comment

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