rough idle
Thread Starter
Advanced
Joined: May 2007
Posts: 88
Likes: 12
rough idle
I have an 08 a6,i had the car dyno tuned ayear ago.this past month i noticed when i am stopped at a traffic light with or without the air on the idle one the car is not as smooth as it used to be.i brought the car back to the tuner ,he checked for vacuum leaks cleaned the vararam,and checked the wires and plugs to make sure nothing was loose.he checked all the settings for fuel and air,everything was in range of where it was suppose to be.i would like to know if anyone on the forum has experienced this problem,and what i can do to alleviate it.thanks in advance.
Burning Brakes
Joined: Feb 2008
Posts: 988
Likes: 2
There is a base minimum airflow table. I found on the stock C6 by doing any modifications it actually gets thrown off slightly. Most tuners won't even touch that for non-cammed cars... usually no reason to. But I noticed that sometimes the engine rpms would creep up on my LS3 coming to a light and drop once stopped. It isn't anything huge, but this table actually does need a little tuning for anything with mods. I had 1-7/8 inch headers.
Melting Slicks
Joined: Jan 2004
Posts: 2,246
Likes: 5
From: West Coast
Racer
Joined: Nov 2008
Posts: 400
Likes: 0
From: cen-tex
Is there a screen before the MAF on the stock intake?? If so, did you re-install it when you switched intakes? Also, i remember on mustangs when you changed intakes, if you didnt orient the MAF the same way it came off, it could mess with the idle. They were usually like straight up or down. I don't know anything about LS3's though. Thats just what could mess w/ idle on a little old 281.
