engine trouble

2003 VOLKSWAGEN PASSAT
140,000 MILES • 4 CYL • FWD • AUTOMATIC
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MIKEMADDAS
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  • 1 POST
i have a 2003 vw passat that studders when it idles any idea what this is, it doesent do this when you get over 1000 rpms is this a problem with the fuel injection, spark plugs or something like that im not sure
Jan 22, 2011 at 10:57 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-
Apr 4, 2011 at 11:47 PM
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