Mechanics

IN GEAR IHAVE 6500 RPM AND MISSES

2000 Saturn Station Wagon • 267,000 miles

Ruff changed o2 and tps
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Williammoo
December 17, 2011.



http://www.2carpros.com/articles/engine-misfires-or-runs-rough

1.Defective spark plugs

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.Manifold absolute pressure sensor

12.Mass Airflow Sensor

13.Idle air control valve

Rasmataz
Dec 17, 2011.