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Pontiac
Sunfire
Engine
Symptoms
Runs Rough
2000 Pontiac Sunfire runs rough
2000 PONTIAC SUNFIRE
98,000 MILES • 4 CYL • FWD • AUTOMATIC
ALLEYCAT
MEMBER
3 POSTS
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2000 Pontiac sunfire runs rough and the catalytic converter gets red any ideals what could cause this problem
Jul 17, 2010 at 5:41 PM
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RASMATAZ
CERTIFIED EXPERT
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.
Jul 17, 2010 at 7:35 PM