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Throttle body issues

This is a discussion on Throttle body issues within the GTO forums, part of the Vehicle Specific category; Originally Posted by cncfixer thanks for getting back to me . i'm going to use the L92/ ls2 90 mm ...

  1. #21
    Need Sand ??? Naf's Avatar
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    Quote Originally Posted by cncfixer View Post
    thanks for getting back to me . i'm going to use the L92/ ls2 90 mm truck body. 6 pin. my truck is the 8 pin 2003 model lq9.i have the service books that show the wiring diagram for 2003. i'm thinking the 6 pin uses only 1 5 volt and 1 neutral instead of 2 on the 2003.
    That is exactly correct. I know you wanna go down this road, but think how much it will all cost you in the end...You could get the tb i suggested port it out to 90mm and not mess with the wiring...No foul no harm...
    Alterin the wiring will lead to lose of hair, emense stress and no assitance from anyone for you are in two realms rather than one...

    In the end its your call, i have copied my the correct wiring diagram (you were warned, it will fail you)...Have fun, enjoy the tourment...


    8 Pin Wire Color Circuit No. Function
    A YEL 581 Throttle Actuator Control (TAC) Motor Control - 1
    B BLK/WHT 1704 Throttle Position (TP) Sensor #2 Low Reference
    C BRN 582 Throttle Actuator Control (TAC) Motor Control - 2
    D BLK 452 Throttle Position (TP) Sensor #1 Low Reference
    E LT-BLU/BLK 1688 Throttle Position (TP) Sensor #2 5-Volt Reference
    F PPL 486 Throttle Position (TP) Sensor #2 Signal
    G DK-GRN 485 Throttle Position (TP) Sensor #1 Signal
    H GRY 416 Throttle Position (TP) Sensor #1 5-Volt Reference


    6 Pin Wire Color Circuit No. Function - Throttle Body
    A BRN 582 Throttle Actuator Control (TAC) Motor Close Control #2
    B YEL 581 Throttle Actuator Control (TAC) Motor Open Control #1
    C BLK/WHT 1704 Throttle Position (TP) Sensor #1 and #2 Low Reference
    D DK-GRN 485 Throttle Position (TP) Sensor #1 Signal
    E LT-BLU/BLK 1688 Throttle Position (TP) Sensor #1 and #2 5-Volt Reference
    F PPL 486 Throttle Position (TP) Sensor #2 Signal




    Combine TP Sensor #1 and #2 Low Reference together in pin C
    Combine TP Sensor #1 and #2 5-Volt Reference together in pin E

  2. #22
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    thanks i figured that might work. i fix mori seiki cnc machines and have worked on many vehicles over the years.i have not taken apart my engine as of yet,but i like to have all my parts ready.i am going to build the engine with L92 heads stroke to 4.0 and use new escalade intake with 90 mm tb .i am big time motor head .thanks again for info. will give that a try when i get into it. merry chritmas and happy new year

    Paul

  3. #23
    Need Sand ??? Naf's Avatar
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    FYI in all the new vehicles there are to ECUs...No more PCMs, now you have one for the engine and one for the transmission...Both are serperated...

    Merry X-mas and Happy new year...

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