2002 Oldsmobile Alero misfire

2002 OLDSMOBILE ALERO
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IKEY74
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  • 1 POST
Engine Mechanical problem
2002 Oldsmobile Alero 6 cyl Automatic 140880 miles

last week the check eng light came on and it was a misfire in cyl 2 so we put brand new spark plugs in and than again today check engin light came on and said misfire in cly 3 it also bogs out if u go over 50mile and hour and the check engine light flash intill u get under 50 what could this be
Feb 9, 2009 at 9:47 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
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Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
Feb 9, 2009 at 9:51 PM
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