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Thread: Engine dies after releasing gas pedal.

  1. #1

    Default Engine dies after releasing gas pedal.

    Project is a 1971 chevelle with Ls3 swap using atomic efi ls kit.



    Car starts up perfectly find and sound like all power is there. Only problem is car shuts off when idle drops. Cant even give it a bit of gas because as soon as throttle is released the car stalls. I have done the latest software update but no difference was made with the problem. Fuel pressure and spark are great.



    Anybody experience this before?

  2. #2
    msdtech1955 Guest

    Default Engine dies after releasing gas pedal.

    What is the target idle rpm?





    msdforms@msdperformance.com







    Latitude: 31.730125
    Longitude: -106.29673








  3. #3

    Default Engine dies after releasing gas pedal.

    775

  4. #4
    msdtech1955 Guest

    Default Engine dies after releasing gas pedal.

    automatic or standard ....?



    msdforms@msdperformance.com







    Latitude: 31.730125
    Longitude: -106.29673








  5. #5

    Default Engine dies after releasing gas pedal.

    automatic tranny that is

  6. #6
    msdtech1955 Guest

    Default Engine dies after releasing gas pedal.

    we need to turn the adjustment screw on the throttle body a half turn .







    the plate is closed and will not allow air to pass by ...









    msdforms@msdperformance.com







    Latitude: 31.730125
    Longitude: -106.29673








  7. #7

    Default Engine dies after releasing gas pedal.

    i have tried that but it wont seem to help it at all.

  8. #8

    Default Engine dies after releasing gas pedal.

    What does the TPS read on the handheld while in the rest (idle) position, and WOT (floored) position?



    This can be done without running the engine. Just ignition on.

  9. #9

    Default Engine dies after releasing gas pedal.

    Is this a stock or performance cam?

  10. #10

    Default Engine dies after releasing gas pedal.

    At idle tps reads 1% and at full it reads 63%



    and it has a performance cam.

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