Engine Idle

Tiny
TONYALYNETTE
  • MEMBER
  • 2002 JEEP GRAND CHEROKEE
  • V8
  • 4WD
  • 105,000 MILES
I have a 2002 jeep grand cherokee limited when I start it up the engine idles very loud it will calm down some but it continues to idle
Tuesday, March 22nd, 2011 AT 12:38 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following:

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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Saturday, May 28th, 2011 AT 11:53 PM

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