2002 Pontiac Grand Prix Sluggage Engine Lite Came On Had Code P0300 Seems

2002 PONTIAC GRAND PRIX
120,000 MILES
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Sluggage, engine lite came on had code of p0300, seems to shift but and runs ok after getting to speed, friend though maybe vaccuum, seems to b between 2nd and 3rd.
Feb 13, 2013 at 4:00 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
P0300 Random Misfire are normally caused by vacuum leak and contaminated fuel-Could also be other things: Go to this walk thru link: https://www.2carpros.com/articles/engine-misfires-or-runs-rough
Feb 13, 2013 at 4:27 PM
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