I have a 2002 auto a4 18T. At low rpms the cars shutters like jumps in rpms. The car shitfts fine, i just had a tune up and got the check engine to clear then it just popped back up. The car runs fine its not lagging or anything just the rpm jumping. Has anyone had this problem or sound like sometihng they had please fill me in cause me and my mech are having some problems.

 

what mods if any? did you have it checked for fault codes?? ( idle control valve )

 

No mods at all. bone stock, trying to get the thing fixed before i mod it out

 

loose vacuum pipes/air leaks/IAC/throttle body clean out/air filter without codes I could go on much longer

 

Just had the whole car looked at, the throttle body was cleaned and there was one vaccum line leak to the boost. after the tune up the car doesnt do it as bad ut still does. Havent looked at the iac yet. and it popped a sensor code it was replaced. this car seems to be a bottomless money pit!

 

bottomless money pit show me a pet that isn't if its your pride and joy the cost is immaterial

 

yeah but when you dont have alot of it.......

 

my first car was a broken down mini Austin rover so I learned from the start you guys have more bucks so now you pay the penalty

 

Try getting a pressure tester. A pressure tester is a valuable tool on the turbo motors then get a vag com if you have not already. With these 2 tools you can help us help you and there is almost nothing you can diagnose

 

Is this at idle or when your driving too? Does it feel like a slipping clutch?