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Car running rough

Tiny
CORYB
  • MEMBER
  • 2000 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 282,000 MILES
I have a 2000 chevy cavalier with a 2.2 liter automatic, with 282,000km's. When it first starts (cold) it runs great, but after about 10 minutes of running, when it gets up to temp, it almost feels like someone pulled off a plug wire. There is no power, it will stay running but runs very rough. I tried pulling each plug wire off idividually but it doesn't seem to make much of a difference. It has the original spark plugs but new wires. Could a faulty plug do this or a bad coil pack?
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Thursday, February 10th, 2011 AT 11:55 PM

3 Replies

Tiny
CORYB
  • MEMBER
  • 3 POSTS
If someone could help me, I would be forever grateful.
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Thursday, February 10th, 2011 AT 11:57 PM
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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Friday, February 11th, 2011 AT 12:03 AM
Tiny
CORYB
  • MEMBER
  • 3 POSTS
I will change the plugs tomorrow and see if that makes a difference, if not I will try the coil pack. Thanks so much rasmataz
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Friday, February 11th, 2011 AT 2:11 AM

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