IDLE ROUGH WHEN STOPPED AT TRAFFIC LIGHT OR STOP SIGN
2003 Volkswagen Passat
September, 23, 2013 AT 8:45 PM
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!