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Idle rough when stopped at traffic light or stop sign

Tiny
SCOTTRJR-23321
  • MEMBER
  • 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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Monday, September 23rd, 2013 AT 8:45 PM

3 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Which engine do you have?Also what are the exact code numbers you have not code descriptions?
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Monday, September 23rd, 2013 AT 8:51 PM
Tiny
EXOVCDS
  • MECHANIC
  • 1,883 POSTS
Replace the PCV check valve.

Thomas
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Tuesday, September 24th, 2013 AT 5:03 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
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.
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Tuesday, September 24th, 2013 AT 7:30 PM

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