Vacuum Lines / Mis-firing & poor idle

Reply Subscribe

Thread Tools

Search this Thread

04-22-2013, 07:24 AM

#11

v12bug

AudiWorld Newcomer

Thread Starter

Join Date: Sep 2012

Posts: 9

Likes: 0

Received 0 Likes on 0 Posts

Quote:

Originally Posted by benhenry32

Just picked up a 2002 A6 3.0, looking for any help with vacuum lines. I found some that were disconnected and i think some are in the wrong spot. I know about the diagram on the hood, but just isn't clicking for me. if any one could post some photo's of the vacuum lines and there routing would be great. engine runs but idles bad and is sluggish.

hi, poor idling can normally be associated with a dirty / clogged throttle body. I would suggest you firstly completely remove the TB from the car and give it a good through cleaning, with some carb cleaner or similar. Then perform a TBA (throttle body alignment).

There was a TSB regarding this issue, and the how to can be found here:

https://www.audiworld.com/tech/eng109.shtml

Secondly, I would replace all your vacuum lines with silicone, it's cheap and easy to do and better than the OEM crappy rubber hoses.

I attach some diag's from ElsaWin illustrating the vacuum lines for the A6 V6 engine (towards the bottom of PDF).

I have converted it to PDF format for easy reading.

Hope this helps.

Attached Files