Passat L4-1.8L Turbo (AWM) (2004)
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Ribbed V-belts (unequal / tension)
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Engine has tension or is not properly located on engine mounts
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Exhaust system has tension or is not properly located on exhaust mounts
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Dual mass flywheel
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Crankshaft vibration damper
Hard Misfiring
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Vacuum leak or intake manifold leak
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Leaking canister purge (N-80) valve
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Poor contact with engine speed sender or camshaft position sensor (check via Functions » component selection (GFF)
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Wheel for engine speed sender or camshaft position sensor loose
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Fuel Supply (see Repair Manual in Elsaweb)
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Poor fuel quality or fuel contamination (see T.B. instance 2014815)
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Mechanical fault of EGR valve.
NOTE:
If ignition coil is found to be the cause, replace remaining coils with the latest available version. Always see Parts Dept. for the latest parts
information.
ONLY ignition coil identified by BAK manufacturer code are affected.
Use tool T40039 to remove ignition coil.
DO NOT twist ignition coil when installing.
DO NOT use any object to tap ignition coil into position.
Warranty
Information only.
Required Parts and Tools
No Special Parts required.
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair
Manuals for the latest information.
