car idles rough and no power

2000 PONTIAC SUNFIRE
89,136 MILES • 4 CYL • 2WD • MANUAL
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BOBBIJOJONES
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  • 14 POSTS
MY CAR DIED ON ME I CHANGED THE INGINTION COILS AND THE CAR NOW STARTS IT RUNS ROUGH I HAVE REPLACED PLUGS AND WIRES. WHAT ELSE COULD IT BE
Mar 15, 2011 at 12:39 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Engine running rough or misfiring can be cause by the following:

1.Defective spark plug.
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.Vacuum leak
5.Fautly fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
Mar 15, 2011 at 12:46 AM
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BOBBIJOJONES
  • MEMBER
  • 14 POSTS
is there a way to determine what is wrong
Mar 15, 2011 at 12:49 AM
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BOBBIJOJONES
  • MEMBER
  • 14 POSTS
it also has no power when going down the road
Mar 15, 2011 at 12:50 AM
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CADIEMAN
  • ✓ASE Certified Mechanic
  • 3,544 POSTS
  • ASE Certified Mechanic
u need to scope the motor to track this down.gl
Mar 19, 2011 at 8:42 PM
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