Recent content by Repairman77

  1. Repairman77

    04 TRAILBLAZER 4.2 WONT REV PAST 3K?

    To clarify my vehicle is a 4.2 and it is a 2 wire crank sensor. It would have been help[full if someone would have said the 4.2 have a rev limiter in the beginning of this post. I've never owned one of these, and all my other trucks don't have this option.
  2. Repairman77

    04 TRAILBLAZER 4.2 WONT REV PAST 3K?

    Update, I did get all the old gas out and replaced with fresh and I took the car for a drive around the block it does shift its sluggish and under powered but it is working. still will not rev up.. with my scanner hooked up it shows absolute throttle position at 33% when holding to the floor...
  3. Repairman77

    04 TRAILBLAZER 4.2 WONT REV PAST 3K?

    Yes, AC Delco plugs were used. And the vehicle seems to be stuck in limp mode. Low power and limited rev.. I will post scan tool results with a video of car running this weekend I'm leaning in direction of damaged wire harness and or ecm or possible timing issue. When I first started working on...
  4. Repairman77

    04 TRAILBLAZER 4.2 WONT REV PAST 3K?

    Yes, in park.. This vehicle is not able to be driven wont shift out of 1st
  5. Repairman77

    04 TRAILBLAZER 4.2 WONT REV PAST 3K?

    Already unbolted exhaust at the manifold to catalytic converter to eliminate cat/muffler restriction-no change in problem. replaced throttle body with a china copy just to see if symptom's changed- no change does have a crank shaft position sensor failure code - replaced crank sensor - still...

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