Mechanics

IDLE ROUGH WHEN STOPPED AT TRAFFIC LIGHT OR STOP SIGN

2003 Volkswagen Passat • 130,000 miles

Tread Quarters did diagnostic.-Replace line vacuum hose, next day return car w/same problem, install a factory part (unknown), p/u car & return within 2 hours same problem. Was told to go to dealers. Not fair, they got paid, still got the idling & check eng. Light back on. We install 4 coil pack & wires prior to. But Rough idle & check eng light continues. Help!
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Scottrjr-23321
September 23, 2013.



Which engine do you have?Also what are the exact code numbers you have not code descriptions?

Saturntech9
Sep 23, 2013.
Replace the PCV check valve.

Thomas

Tiny
Exovcds
Sep 24, 2013.
That's a good one Thomas I had another user with a similar problem with.A pcv leaking vacuum causing issues. They supposedly make a Aftermarket metal one.

Saturntech9
Sep 24, 2013.