Why would the engine run rough intermittently?

TINABOUDREAU

MEMBER
1996 DODGE 600
202,123 MILES

Engine intermittently sputters/runs rough while driving and idling. Changing RPM will temporarily fix/change the issue. Seems to happen the most around 2000RPM. This vehicle was just given to us so I don't know a lot about it. I've picked up a fuel filter and I believe I hear a vacuum leak in the engine but haven't pinpointed it yet. I'm unsure if this could also be related to timing and not just a possible fuel or vacuum issue. Any clues on what to look for would be greatly appreciated.

Monday, November 28th, 2011 AT 8:17 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

https://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

Note: If it doesn't apply disregard it-

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Monday, November 28th, 2011 AT 8:22 PM