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1997 Chevrolet Tahoe

Question: P0300

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0727, 5.7L V8, Wichita Falls, TX, February 07, 2010, 13:42

 Rookie

i have had a P0300 for a long time. I have changed or checked just about everything from plugs to the fuel pump even tested the injectors and cylinder compression. The first time i corrected it by setting the cmp sensor it was 22% out. Then it ran fine for a short while . it seems to miss between 1200&2200 RPM. Mainly when accelerating and also when cruise is set and going down hill. I have checked every sensor or replaced it. I used to work as a service mgr at a dealership and i even called TAC about it and they could't help me. I left before they could send someone down to look at it. Can you help me ?

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• Answer #1

  TurboSDCharger February 07, 2010, 20:42
  

   Technician

  This info might help: http://repairpal.com/OBD-II-Code-P0300
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