2000 328i rough idle when cold. Please help. - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 01-12-2006, 12:01 PM
n00b
 
Join Date: Dec 2005
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
shawnst is on a distinguished road
(Thread Starter)
2000 328i rough idle when cold. Please help.

Hi, I have a 2000 328i. During winter, when I start the engine in the morning, it always has rough idle. It does not matter if I leave the car outside or in the garage over night. But after I drive it for a few minutes, rough idling will be gone. It only happens during winter. I've taken the car to the dealer, but they said nothing unusual was found. Did anyone come across same or similar problem and might know of any cure to this? Any suggestion/tips is greatly appreciated. Thanks The car is bone stock and has about 55k miles on it.
shawnst is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 01-12-2006, 12:32 PM
drz
Administrator
 
drz's Avatar
 
Join Date: Dec 2004
Location: Tee Ex
Posts: 12,129
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute
Send a message via AIM to drz Send a message via MSN to drz
Describe the "roughness," please. Do the revs go up and down as if someone were tapping the accelerator? Does the car shake? Be a little more thorough. Most of the time, cleaning out the idel control valve solves most idling problems.

drz is offline  
#3 (permalink) Old 01-12-2006, 04:58 PM
n00b
 
Join Date: Dec 2005
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
shawnst is on a distinguished road
(Thread Starter)
Thanks for the reply. By "rough idle", I mean, the rpm drops (to almost 0), and then comes back up (to normal). The rpm keeps dropping and coming back up like every 5-10 seconds or so. The car does not shake, it's just the rpm not being stable. But once the engine is warmed, the problem goes away.
shawnst is offline  
#4 (permalink) Old 01-12-2006, 05:46 PM
2nd Gear Member
 
zibby's Avatar
 
Join Date: Dec 2004
Location: Vancouver, Canada
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
zibby is an unknown quantity at this point
As "Drz" says it is most likely isv problem. Take a screwdriver or something else and lightly tap on it , if rpm stabilize you got it right !
zibby is offline  
#5 (permalink) Old 01-12-2006, 06:11 PM
drz
Administrator
 
drz's Avatar
 
Join Date: Dec 2004
Location: Tee Ex
Posts: 12,129
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute
Send a message via AIM to drz Send a message via MSN to drz
The most common fix is to clean out the ICV.

The following is a paraphrase of Bavautos' recommendation for the same problem on an e30 (I don't know how much is similar or different):

An idle that countinuously goes up and down is tipically due to eaither a lean fuel mixture or a faulty idle control system. A lean mixture can be caused by a number of things; once is a vacuum leak. Check your engine's rubber intake boot for cracks or tears, and inspect all of the air and vacuum lines. If you find no vacuum leaks, clean out the idle control valve (ICV). If that does not fix it, you may have to replace the idle control module (in the glove box, I believe).

Clogged injectors, the cold-start valve or the thermo-time switch can also cause this problem, but these are less liekly causes.

drz is offline  
#6 (permalink) Old 01-12-2006, 06:43 PM
2nd Gear Member
 
zibby's Avatar
 
Join Date: Dec 2004
Location: Vancouver, Canada
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
zibby is an unknown quantity at this point
Quote:
Originally Posted by drz
The most common fix is to clean out the ICV.

The following is a paraphrase of Bavautos' recommendation for the same problem on an e30 (I don't know how much is similar or different):

An idle that countinuously goes up and down is tipically due to eaither a lean fuel mixture or a faulty idle control system. A lean mixture can be caused by a number of things; once is a vacuum leak. Check your engine's rubber intake boot for cracks or tears, and inspect all of the air and vacuum lines. If you find no vacuum leaks, clean out the idle control valve (ICV). If that does not fix it, you may have to replace the idle control module (in the glove box, I believe).

Clogged injectors, the cold-start valve or the thermo-time switch can also cause this problem, but these are less liekly causes.
What I ment by "tapping"on it is to recognize the problem ,then naturaly you have to clean it
zibby is offline  
#7 (permalink) Old 01-12-2006, 10:02 PM
2nd Gear Member
 
zibby's Avatar
 
Join Date: Dec 2004
Location: Vancouver, Canada
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
zibby is an unknown quantity at this point
Quote:
Originally Posted by zibby
What I ment by "tapping"on it is to recognize the problem ,then naturally you have to clean it
i
Idle control valve T-shape is part of the intake manifold system
Attached Thumbnails
Click image for larger version

Name:	C403031762BOS.jpg
Views:	922
Size:	26.0 KB
ID:	22920  
zibby is offline  
#8 (permalink) Old 01-13-2006, 06:40 AM
n00b
 
Join Date: Dec 2005
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
shawnst is on a distinguished road
(Thread Starter)
Thanks guys. If the ICV is the culprit, I guess the problem would happen all the time, right? The idle problem ONLY happens to me during winter. In summer months, the engine starts and idles just fine.
shawnst is offline  
#9 (permalink) Old 01-13-2006, 06:41 AM
n00b
 
Join Date: Dec 2005
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
shawnst is on a distinguished road
(Thread Starter)
Thanks guys. If the ICV is the culprit, I guess the problem would happen all the time, right? The idle problem ONLY happens to me during winter. In summer months, the engine starts and idles just fine. used: so I am guessing it might have something to do with some sort of temperature sensor??

Last edited by shawnst; 01-13-2006 at 06:51 AM.
shawnst is offline  
#10 (permalink) Old 01-13-2006, 11:20 AM
drz
Administrator
 
drz's Avatar
 
Join Date: Dec 2004
Location: Tee Ex
Posts: 12,129
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute drz has a reputation beyond repute
Send a message via AIM to drz Send a message via MSN to drz
Quote:
Originally Posted by shawnst
Thanks guys. If the ICV is the culprit, I guess the problem would happen all the time, right?
This is not true. I recommend that you go and check you ICV.

drz is offline  
#11 (permalink) Old 01-13-2006, 11:17 PM
Pandemonium Director
 
nukeduster's Avatar
 
Join Date: Mar 2005
Location: Scottsdale, Arizona
Posts: 2,372
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute nukeduster has a reputation beyond repute
Send a message via AIM to nukeduster Send a message via MSN to nukeduster
not true becuase the bearings inside the icv could bind during colder weather

nukeduster is offline  
#12 (permalink) Old 01-15-2006, 08:59 AM
n00b
 
Join Date: Dec 2005
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
shawnst is on a distinguished road
(Thread Starter)
Ok, I got it thanks. I did a search on the forum and couldn't seem to find any ICV-DIY pages or instructions. Is it difficult to DIY?
Some people also said replacing the spark plugs solved the problem. I think I am gona try putting in new spark plugs first. I will check the ICV If I can find any ICV-DIY information.
shawnst is offline  
#13 (permalink) Old 01-16-2006, 04:39 PM
n00b
 
Join Date: Dec 2005
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
shawnst is on a distinguished road
(Thread Starter)
for those who want to replace/clean the ICV, here are some useful info:
http://forum.e46fanatics.com/showthread.php?t=245141
http://www.realoem.com/bmw/showparts...43&hg=13&fg=15

http://www.realoem.com/bmw/showparts...43&hg=13&fg=15

I managed to remove the ICV and cleaned it. But that didn't seem to solve the problem. When I looked at the ICV, there seemed to be a little gap in the ICV, is that correct? How do I check if the ICV is faulty? Also, if the ICV is not the problem, what's the 2nd most possible reason that can cause the (cold) rough idle? Thanks.
shawnst is offline  
#14 (permalink) Old 01-16-2006, 06:14 PM
2nd Gear Member
 
zibby's Avatar
 
Join Date: Dec 2004
Location: Vancouver, Canada
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
zibby is an unknown quantity at this point
If you do not have "check the engine " light on , contact BMW dealership and let them update software on your car, it should help.
zibby is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E46, E90)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Erratic Idle / Misfire / Cutting out makdolby 3-Series (E36) 12 02-05-2012 07:57 AM
E39 Cold Idle Problem, Solution TWKTCC 5-Series (E12,E28, E34, E39, E60) 6 04-05-2005 03:37 PM
Rough Idle After Spark Plug Change parker1000 3-Series (E36) 17 03-04-2005 01:06 AM
very hard cold starts+ rough idle ????? jshores7 3-Series (E36) 5 03-02-2004 08:57 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome