Question about 2000 Pontiac Grand Prix

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Recently changed motor from 97 bonnaville.l had to change all my parts for my motor. the only thing l didn't change wiring harness.. when l am going 80km l kick in super charger it losses power.

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  • Master
  • 1,016 Answers

Hi
Do you have any fault cades flashing on the dash?
Is the engine hot or cold when you do this?

You may have a intake system leak or a fuel system is leaning out too much.

Let me know and I can give you further information.

Thanks

Jason

Posted on Jul 13, 2010

  • kevinlong332 Jul 13, 2010

    thanks jason just had car on code reader and it showed random misfire l cleared code and light went out
    but when engine in p or n engine seems to run fine put in drive the enigine begins to mis and sputter
    is the firing order on a 97bonnville same as 2000 grand prix both 3.8 super charged thank kevin



  • Jason Maurirere
    Jason Maurirere Jul 13, 2010

    Ok

    your firing order should be 1-6-5-4--3-2,

    idle speed should be 600-700 rpm



    Check these out and see if they are correct, but if you are having idle prblems when you engage the D or R then you have a idle control problem.



    I can send you this information if you need it.

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  • Pontiac Master
  • 6,826 Answers

Supercharger Removal & Installation To Remove:
NOTE: Do not attempt to repair the supercharger. Service is limited to the replacement of the entire unit.

  1. Disconnect the negative battery cable.
  2. Remove the fuel injector appearance cover.
  3. Remove the exhaust gas recirculation (EGR) valve heat shield.
  4. Remove the supercharger drive belt.
  5. Remove the right spark plug wires from the ignition control module.
  6. Remove the generator brace.
  7. Remove the MAP sensor bracket.
  8. Relieve the fuel system pressure.
  9. Remove the fuel supply rail assembly.
  10. Remove the boost control solenoid.
  11. Disconnect the vacuum lines from the following components:
    • Fuel pressure regulator valve
    • Supercharger
    • Supercharger bypass valve
    • Manifold vacuum source
  12. Disconnect the electrical connectors from the following components:
    • Exhaust gas recirculation (EGR) valve
    • Supercharger bypass valve
    • Intake air temperature sensor (IAT)
    • EVAP purge valve
    • Mass air flow (MAF) sensor
    • Idle air control (IAC) valve
    • Throttle position (T/P) sensor
  13. Remove the accelerator and cruise control cables with bracket from the throttle body.
  14. Remove the air cleaner intake air duct.
  15. Remove the left and right side supercharger bolts.
  16. Remove the supercharger and gasket.
  17. Remove the supercharger O-rings.
  18. Clean the lower intake manifold-to-supercharger mating surfaces.
To Install:
  1. Install new supercharger O-rings. Do not use any sealer on the gasket.
  2. Install the supercharger with a new gasket. Tighten the supercharger bolts starting from the center and working to the outside to 17 lb ft (23 Nm).
  3. Install the air cleaner intake air duct.
  4. Install the accelerator and the cruise control cables with bracket.
  5. Connect the electrical connectors to following components:
    • Intake air temperature (IAT) sensor
    • Idle air control (IAC) valve
    • Throttle position (T/P) sensor
    • Mass air flow (MAF) sensor
    • EVAP purge valve
    • Exhaust gas recirculation (EGR) valve
    • Supercharger bypass valve
  6. Connect the vacuum lines to the following components:
    • Manifold vacuum source
    • Supercharger bypass valve
    • Supercharger
    • Fuel pressure regulator valve
  7. Install the boost control solenoid.
  8. Install the fuel supply rail assembly.
  9. Install the MAP sensor bracket.
  10. Install the generator brace.
  11. Install the spark plug wires to the ignition control module.
  12. Install the drive belt on the supercharger.
  13. Install the EGR valve heat shield.
  14. Install the fuel injector appearance cover.
  15. Connect the negative battery cable.
  16. Start the engine and check for fluid or vacuum leaks.

Posted on Jul 13, 2010

  • Duane Wong
    Duane Wong Jul 13, 2010

    If the supercharger worked before, then something got damaged as far as connections.



    Have an electrical shop for automobiles look at the problem, if you think the Supercharger is ok.



    Those are a lot of parts to change over for the Supercharger.



    Good luck.

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