Here's the deal, 03 a4 t.8q, idles rough when i'm at a standstill, runs smooth when i'm driving, got new plugs+coil packs, cleaned maf, and air filter, any ideas what else i could possibly check, anybody else have this problem???

 

C'mon guys, somebody's gotta have an idea of what this prob. could be, pleeeeeease, it's drivin me nuts

 

Clean your throttle body. Is your CEL on?

 

vacuum leak... check the hoses coming off of intake manifold...

 

Read codes and post them.

 

Thanks for the response guys, no cel, and no i haven't cleaned the throttle body, for 1 didn't think of it & don't know how, any how to's? easy?

 

oh, yeah, i'll check those vacuum hoses too, let ya knoe what happens

 

Any luck on fixing the rough idle issue?? My 03 b6 1.8 is experiencing the same problems and I have done everything under the sun to this car except check for vacuum leaks. What do I look for? Is there a good diy for this out there somewhere?? Thanks.

 

You adapt the throttle?

if so...

Fuel trims would be very useful information here...