2002 Chevrolet Avalanche Repair Question
Asked on January 2, 2011
Running rough
02 avalanche,116k,5.3L,z71,4x4. No previous problems,this week it has been starting to run rough at times.Then today suddenly stalled while out.tried starting but wouldn,t start at first,just kept cranking.Then after a few started but ran rough then seemed fine.
Asked by kodidogAnswer
Replied on March 17, 2011
Engine running rough or misfiring can be cause by the following:
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
Note: If it doesn't apply disregard it-
