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Thread: 4.2 I6 intermitting stalling please see file Trailblazer Rainier

  1. #1
    Tuner in Training
    Join Date
    Feb 2012
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    4.2 I6 intermitting stalling please see file Trailblazer Rainier

    Hi;
    Was hoping someone might not mind reading this file and giving there opinion.

    My Sister has had a problem with a very intermittent stalling problem with her 04 Rainier/Trail blazer 114k miles. I figured I would try my HP tuners to see if I could see a problem. Here is a reading of it stalling.
    It has:
    Cleaned throttle body
    New fuel pump
    New variable cam sensor
    new cam sensor

    I am not familiar with these engines. The reading are with a hot engine. The timing looks odd to me. Any incite is very much appreciated.

    Thank you,
    Mike
    Attached Files Attached Files

  2. #2
    Tuner in Training
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    Feb 2012
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    Can anyone tell me if the readings look normal or can someone send me there readings so I can compare?
    thanks

  3. #3
    Tuner in Training
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    Feb 2012
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    Does this look normal with the timing jumping around idling on a 4.2 I6?Capture.JPG

  4. #4
    Advanced Tuner |V3nom|'s Avatar
    Join Date
    Apr 2009
    Location
    Denham Springs, LA
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    418
    ideally you want smooth timing at idle but i couldnt really tell you if its normal or not on the I6. youll have to find someone with a properly working engine and have them log it to show you.
    2008 Sky RL