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Thread: 05 Silverado 7K Max RPM??? PCM Loses Com After Limiter

  1. #1

    05 Silverado 7K Max RPM??? PCM Loses Com After Limiter

    Trying to turn this thing over 7k. Wondering if there is an issue with the OS. Hits 7k, makes a loud POW, then has no com or ECT response until the rpm just falls to zero.
    Attached Files Attached Files

  2. #2
    bump

  3. #3
    Bueller?

    Anyone?

  4. #4
    Losing crank sensor signal and gets knocked out of sync

  5. #5
    Quote Originally Posted by NTIMID8 View Post
    Losing crank sensor signal and gets knocked out of sync
    So, hardware, software, or electrical problem?

    And it does it at 7k every time like clockwork.

  6. #6
    ???

  7. #7
    Bump for the weekend

  8. #8

  9. #9
    Potential Tuner
    Join Date
    Oct 2017
    Posts
    4
    Are you logging crank position signal and cam sensor signal hi lo? add the pids and see what your crank signal is doing

  10. #10
    I will add those.