SPONSORED LINKS

Rough idling and vibrations in my car at lower RPMs?

Tiny
BOBBY_BLACQ
  • MEMBER
  • 2004 BMW 330CI
  • 3.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 121,607 MILES
Hello, I am experiencing rough idling and vibrations in my car at lower rpms. I changed out some coils, checked for leaks (found none), and still no good. I used a scanner and it's throwing no fault codes, I'm having a mechanic check my ICV to see if it's failing. Can anyone point me to other things that could cause this problem? Thanks
SPONSORED LINKS
Tuesday, May 2nd, 2023 AT 1:58 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

When you say you checked for leaks, did you use something like carb cleaner to help? See link.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Next, I'm not sure if you tried, but oftentimes cleaning the throttle body bore will help this type of issue.

https://www.2carpros.com/articles/throttle-actuator-service

Also, there is an idle speed control valve under the intake that may be causing issues. I attached a pic of it below. However, this will usually set a code.

Let me know as much as you can.

Take care,

Joe

See pic below.
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, May 2nd, 2023 AT 7:49 PM

Please login or register to post a reply.

Related Engine Idle Rough Content

Rough Engine Idle
GUIDE
Rough Engine Idle
A rough engine idle condition is a common issue that many drivers face often indicating underlying problems within the engine, fuel or ignition system. We have created this...
VIEW MORE

Sponsored links