Rough Idle

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06-04-2008 | 12:10 PM

rpriske

Thread Starter

1st Gear

Joined: Jun 2008

Posts: 24

From:

Rough Idle

When I just sit and let the car idle, it idles rough. It's a 01 s4 6 speed. Any ideas?

06-09-2008 | 08:32 PM

mys4.org

1st Gear

Joined: Dec 2007

Posts: 203

From: Redmond, WA

RE: Rough Idle

I have a similar problem... I'm thinking it's aleak in the TB boot. I just order APR BiPipeso when I get it installed I'll post my results.

Do your rpm bounce around or do you just feel some vibrations?

06-10-2008 | 01:10 AM

drev500@aol.com

Senior Member

Joined: Jan 2008

Posts: 404

RE: Rough Idle

could be a vacuum leak. Those rubber hoses are 7 yrs old so heres gunna be some deteriation.

06-10-2008 | 08:20 AM

CamoA6

2nd Gear

Joined: Aug 2006

Posts: 782

From: Wilmington, NC

RE: Rough Idle

Is the CEL on?

06-10-2008 | 10:07 AM

rpriske

Thread Starter

1st Gear

Joined: Jun 2008

Posts: 24

From:

RE: Rough Idle

No, My RPMs don't bounce. it's pretty steady. I CEL came on for about 2 days and then went off. It runns pretty smooth, but when I get on it, it tries to miss or cut out a little.

06-10-2008 | 11:45 AM

CamoA6

2nd Gear

Joined: Aug 2006

Posts: 782

From: Wilmington, NC

RE: Rough Idle

My geusses...and won't know for sure until you get that code. it is stored in there.

EGT sensor..

MAF sensor.

your probably running lean.

06-10-2008 | 06:40 PM

bamfinogaroS4

1st Gear

Joined: Jan 2008

Posts: 75

RE: Rough Idle

I have the same problem just noticed it today, its 95* out so its hot as hell and was wondering the same thing. The thing is my TBB is not over one year old and is in good shape????