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Thread: Cam stalling on decel

  1. #1
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    Default Cam stalling on decel

    So I have a tsp cam 226/236 114lsa with a stock converter. So driving from light to light the car almost wants to stall coming to a stop and Roma drop to like 500 and then come back up to 850. Can I raise my min rpm or change spark on coastdown ?

  2. #2
    Vendors Phil@PnP Tech's Avatar
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    More than likely it's CT downshift torque management killing the timing during the shift.

    #1. Make sure min idle airflow is correct for all gears. Probably needs more airflow for the cam.

    #2. Verify closed throttle downshift speeds are correct. Cam is going to want to idle a little higher. Downshifts need to happen sooner so increase the downshift speed.

    #3. Decrease the shift time.

    #4. Make sure your min idle vs vehicle speed makes sense.

    If it is still clunky, disable CT downshift torque management.


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  3. #3
    Beyond Help Napalm's Avatar
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    Thank you I needed to read this too.

    I have the LS3 Hot cam from GM performance in mine and I have a similar issue. It doesn't want to stall perse but it bumps around a bit.

    trans really doesn't like it and I keep hearing oh you must have a ______ stall. but I then hear - you need to retune the trans, which makes alot more sense.

    It does stall out if I try to hit the gas from a stop - but I have other issues I think.
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