dieseldoggy
Member
My wife's 2003 TDI Jetta Wagon has developed a rough idle. Engine shakes way more than my Golf. Not indicating any codes or check engine light. Runs good and turbo kicks like normal but drives me crazy at idle. No leaks at injection pump. Cannot detect any vacuum leaks. Starts quickly. Has had injector cleaner added to each fillup most of it's life. However not lately as the wife does not have a mechanical brain and usually forgets this task. I have run sea foam thru the tank but does not help. Mileage is 201K. Has had good maintenance all it's life. My 2003 Golf idles purrs like a kitten at idle with 251K. Anyone have any ideas? Both of our cars are TDI 5 speed manual transmissions.