Idle rough when stopped at traffic light or stop sign

2003 VOLKSWAGEN PASSAT
130,000 MILES
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SCOTTRJR-23321
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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!!
Sep 23, 2013 at 8:45 PM
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SATURNTECH9
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Which engine do you have ?Also what are the exact code numbers you have not code descriptions?
Sep 23, 2013 at 8:51 PM
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EXOVCDS
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Replace the PCV check valve.

Thomas
Sep 24, 2013 at 5:03 PM
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SATURNTECH9
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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.
Sep 24, 2013 at 7:30 PM
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