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Thread: Cold start stumble

  1. #1
    Potential Tuner
    Join Date
    Oct 2019
    Posts
    1

    Cold start stumble

    New to tuning. 2010 escalade, and having issues with cold start stumbling. Replaced, purge valve, vent tank, maf, tps sensor. When i replaced the tps sensor, cold start stumbling went away for about a week. This morning it started again. Wondering if there is an update or somthing i can do in hptuners to be able to update or rest the tps/throttle body. Anyone have this issue? Thanks

  2. #2
    Potential Tuner
    Join Date
    May 2016
    Posts
    1
    Did u click the Throttle body Cleaned button? Then perform the Idle Learn procedure?