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Thread: Gen 4 e38 5.3 only have bank one fuel trims

  1. #1

    Gen 4 e38 5.3 only have bank one fuel trims

    I did a swap in my Colorado the motor has a mild cam in it and I?m trying to sort out my idle to start. When I have my scanner open I can only see bank one short and long term fuel trims. Bank two is blank for both. I do have activity (switching) as normal on both bank one and bank two o2 sensors. Does anyone have some advice as to what could cause this?

  2. #2
    Tuning Addict blindsquirrel's Avatar
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    It would be a whole lot easier to help if you could post the tune and a log file.

  3. #3
    Senior Tuner
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    Mar 2011
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    Quote Originally Posted by Shawnvonpressentin87 View Post
    I did a swap in my Colorado the motor has a mild cam in it and I?m trying to sort out my idle to start. When I have my scanner open I can only see bank one short and long term fuel trims. Bank two is blank for both. I do have activity (switching) as normal on both bank one and bank two o2 sensors. Does anyone have some advice as to what could cause this?
    If they are added to your Channel list, then just click on Repoll for supported parameters.