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Thread: Stall on idle

  1. #1

    Stall on idle

    Z06 09 with Mid cams has issue on idle, on decel after little gas the car want to stall and stay less than the desire RPM

    in log I found the timing goes into minus -3 to -6
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  2. #2
    Senior Tuner mowton's Avatar
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    Quote Originally Posted by Silspark View Post
    Z06 09 with Mid cams has issue on idle, on decel after little gas the car want to stall and stay less than the desire RPM

    in log I found the timing goes into minus -3 to -6
    Need history on this tune. Have the injectors/IFR been changed? Are they stock injectors, if so put back to stock. If not what are they because none off the other injector settings havebeen modified! The idle parameters are pretty hosed also and I would suggest putting back to stock and putting the cooling fan airflow back to stock (0) you have over 30 g/sec? Why is the ETC scalar changed? This needs alot of work for sure....sorry.

    Also you cant log 41 PIDs....based on sample rates and accuracy, limit you PIID counts to 24 or less. Pick the tuning procedure you are working on and make a list of relavent PID's to support that effrot only. You will have to build several PID lists based on each step of the tuning process.

    Lastly are you located in Denver? based on map readings looks like you are at about 5000 ft elevation.

    Ed M
    Last edited by mowton; 05-17-2015 at 09:53 AM.
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  3. #3
    the has been tuned before but it wasn't derivable with many knocks, now the car is pretty fine with stalling issues only

    actually I havent go back to IFR and ETC scale but its seems not stock, Zo6 09 comes with 42lb and 5030 ETC scales

    whats Cooling fan airflow is doing ?

    I will try to reduce the Pids, Im from UAE

    regards

  4. #4
    Tuner in Training
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    would really like to know the fix for this as i am running into the same problem with my 11 Z07 carbon

  5. #5
    Im facing same problem with Camaro 2010 L99 had been converted into LS3 with H/C and Fast 102 and NW TB

    when I come to idle the timing gose under 0 and then sudden going up to desire timing, so why the ECM is retarding the timing in decel and which table are response for that

  6. #6
    Senior Tuner SultanHassanMasTuning's Avatar
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