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Thread: C1500 problem with hot start

  1. #1
    Tuner
    Join Date
    Aug 2019
    Location
    Colombia
    Posts
    74

    C1500 problem with hot start

    I?m having issues with my truck. After I dialed in all the VE, MAF and timing, cold start is great, but when the engine is fully warmed up and I try to start it, sometimes starts and sometimes don?t (I have to hit the gas pedal to help it). Also when it starts, runs about 5 seconds and then goes down on the RPM and again, sometimes it pass the low RPM range and sometimes it stops. That cycle happens for the first 10 - 15 seconds, after that period the engine runs great and never die or lower the desired RPM.

    I want to know what are the main parameters to improve that behavior (attached log and tune).

    Details of the build can be found here: https://forum.hptuners.com/showthrea...-Vortec-tuning
    Attached Files Attached Files
    Last edited by AlanDC; 06-25-2020 at 02:01 PM.

  2. #2
    Tuner
    Join Date
    Aug 2019
    Location
    Colombia
    Posts
    74
    Anyone?

  3. #3
    Advanced Tuner
    Join Date
    Aug 2010
    Location
    Detroit, MI
    Posts
    926
    Your log doesn't show a hot start. Can't give feedback without seeing the issue.