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Car idles rough and no power

Tiny
BOBBIJOJONES
  • MEMBER
  • 2000 PONTIAC SUNFIRE
  • 4 CYL
  • 2WD
  • MANUAL
  • 89,136 MILES
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
Tuesday, March 15th, 2011 AT 12:39 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Tuesday, March 15th, 2011 AT 12:46 AM
Tiny
BOBBIJOJONES
  • MEMBER
  • 14 POSTS
Is there a way to determine what is wrong
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Tuesday, March 15th, 2011 AT 12:49 AM
Tiny
BOBBIJOJONES
  • MEMBER
  • 14 POSTS
It also has no power when going down the road
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Tuesday, March 15th, 2011 AT 12:50 AM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
U need to scope the motor to track this down. Gl
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Saturday, March 19th, 2011 AT 8:42 PM

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