misfiring/stuttering on idle

[frank s3]

evening all was on my way home from work and hit some traffic and my car was thudding evhttp://www.audi-sport.net/vb/newthread.php?do=newthread&f=17ery so often almost misfiring.so i pulled off and car seems to drive fine but when stationary it occurs again im thinking a coil pack is on its way out but ive had 1 or 2 fail and they didnt show any signs they just let go.i have recently fitted a b5 tip could the extra air folw/an old maf cause these problems?? any pointers would be appreciated as no access to vcds

 

[s3 Hoggy]

Could be a few different things, have a look for any obvious split pipes also could be a dirty throttle body? Best to have it scanned with vcds. where abouts are you as there are plenty of vcds owners on here who are happy to help!

 

[s3dave]

It is usually vacuum related on idle check under the inlet manni....

 

[S3featesV9]

I'm having same issue, mines the brake vacuum pipe split. Replacement Hopefully turns up tomorrow or Monday

 

[frank s3]

thanks lads ill have a look at my hoses see if i can see anything, s3featesv9 which one is the break vacuum pipe m8?

 

[S3featesV9]

http://www.audi-sport.net/vb/a3-s3-forum-8l-chassis/153931-help-please-guys.html

this is the thread i started, pics inside mate

 

[jimbob442]

evening all was on my way home from work and hit some traffic and my car was thudding evhttp://www.audi-sport.net/vb/newthread.php?do=newthread&f=17ery so often almost misfiring.so i pulled off and car seems to drive fine but when stationary it occurs again im thinking a coil pack is on its way out but ive had 1 or 2 fail and they didnt show any signs they just let go.i have recently fitted a b5 tip could the extra air folw/an old maf cause these problems?? any pointers would be appreciated as no access to vcds

Alright mate, you get to the bottom of this cos in having the same issues but can't find any leaks, new coil packs, plugs! Scratching my head with this one!!??