1995 Pontiac Grand Prix Engine is running rough

1995 PONTIAC GRAND PRIX
145,000 MILES • 6 CYL • 2WD • AUTOMATIC
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THACKERH
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  • 1 POST
Engine is running rough, and sometimes shutting off. The
RPM's are really low, and very very slow to accelerate. I just got the plugs replaced, and new oil filter and oil. Someone told me that it was the lifters? But when driving it, the smell of fuel is present. Also, the oil pressure sensor was replaced.
Aug 24, 2010 at 11:56 PM
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RASMATAZ
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  • 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.
Aug 25, 2010 at 3:25 AM