unplug one at a time and listen for the change in how the engine runs.
Thx fubardub,This is what I came across in the repair manual,should have caught it earlier...
• Ignition coils and power output stages are a combined
• Ignition coil primary and secondary resistance cannot
• Ignition coils can be very sensitive to moisture which
can cause mis-firing. If replacing, always check with
and Authorized Volkswagen dealer or other knowledgeable
parts Professional to be sure of obtaining
the latest version.
If no faults are found with the supply voltage, impulse signal
or wiring, then the faulty ignition coils should be replaced.
yeah alot of people have even cracked them open and tried to see what actually fails in them. its kinda a mystery. they are cheap enough to just buy 4 new ones and keep the old ones as backups. i keep 3 in my cubby in the hatch.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.