Question about 2002 Volkswagen Passat
If the car is running ok then you probably have either low catalyst efficiency or a faulty or dirty oxygen sensor.
If the car feels like it is losing a cylinder or two then you could have a faulty coil pack(s).
Either way, you need to have the codes read out to determine what the problem actually is before you start throwing parts and money at the car.
Posted on Jul 06, 2008
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Posted on Jan 02, 2017
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