2004 Toyota Camry rough idle

Tiny
TEAFORME2
  • MEMBER
  • 2004 TOYOTA CAMRY
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 104,300 MILES
Runs rough when idle and air is on, but not as bad when I turn air off very little
Friday, September 3rd, 2010 AT 3:40 PM

1 Reply

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. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
10. Throttle position sensor.
11. Idle air control valve.
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Saturday, September 4th, 2010 AT 5:33 AM

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