1999 Toyota Camry Idle

1999 TOYOTA CAMRY
187,000 MILES • 4 CYL • FWD • AUTOMATIC
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MNANA8199
  • MEMBER
  • 1 POST
The car is idling rough. I have changed the spark plugs and spark plug wires
Jul 28, 2010 at 9:00 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 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.
12.Engine compression problem
Jul 28, 2010 at 9:02 AM
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