|
|
|
|
 |
 |
 |
BMW Garage | BMW Meets | Register | Today's Posts | Search |
 |
|
BMW 3-Series (E90 E92) Forum
>
Rough idle @ cold start...
|
 |
| 11-03-2010, 10:46 AM | #1 |
|
Colonel
 
97
Rep 2,160
Posts |
Rough idle @ cold start...
So recently as the temps have been dropping close to freezing I've been experiencing rough idle on cold start-up...
After the car warms up a bit the idle is fine... This is my first winter with a piggyback tune (sstt was on previously) and I never experienced this in the past 2 winters. I'm wondering if the tune has something to do with it??? I also unplugged the exhaust flapper connector for the first time this winter, so maybe the rough idle is due to that??? Trying to diagnose the problem one piece at a time, just plugged the exhaust flapper back in... I'm going to see if that fixes the rough idle... If not I'll scan for codes and remove the tune... If anyone has experienced this, any feedback would be appreciated... Thanks  |
| 11-03-2010, 12:34 PM | #2 |
|
Banned
275
Rep 5,018
Posts
Drives: VALNCYA
Join Date: Jan 2009
Location: Jersey
|
Update the tune make sure you have the most current firmware
|
|
Appreciate
0
|
| 11-03-2010, 01:46 PM | #4 |
|
Banned
23
Rep 960
Posts |
With the BB exhaust mod, Ive noticed a rougher ide. This is prob due to the fact that the cat takes longer to hear up maybe because both pipes are open??? Im stock right now but going JB+ soon.
|
|
Appreciate
0
|
| 11-03-2010, 02:22 PM | #5 | |
|
Colonel
97
Rep 2,160
Posts |
Quote:
We'll soon find out... I plugged the flapper back on and today is another cold one so this evening when I start my car we'll see how it idles |
|
|
Appreciate
0
|
 |
| Bookmarks |
|
|
