2004 Toyota Camry rough idle

104,300 MILES • 4 CYL • FWD • AUTOMATIC
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TEAFORME2
  • MEMBER
  • 2 POSTS
runs rough when idle and air is on,but not as bad when i turn air off very little
Sep 3, 2010 at 8:40 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 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.
Sep 3, 2010 at 10:33 PM
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