Engine Idle

2002 JEEP GRAND CHEROKEE
105,000 MILES • V8 • 4WD
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TONYALYNETTE
  • MEMBER
  • 1 POST
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
Mar 22, 2011 at 12:38 PM
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RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
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-
May 28, 2011 at 11:53 PM
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