2001 Passat idle studder??
Our 2001 Passat wagon 4cyl turbo automatic has a random idle studder. When sitting at a stop light the RPM's quickly drop and then regain idle. It happens at random times and only when idling. It doesn't seem to matter if its in drive or park. Any idea on what sensor could be failing or a possible cause? Over the past year the problem has increased from almost never to a few times at every stop light. My OBDII reader shows no codes. Car has 101K miles.
Thanks..
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