Vibrations at low RPM e.G. When idling

THEPCMANIACCC

MEMBER
2004 BMW 320D
2.0L
4 CYL
RWD
MANUAL
130,000 MILES

Very strong vibrations are felt at low RPM. Can the EGR valve cause such a thing or something else is liklier?

Wednesday, April 16th, 2014 AT 1:49 PM

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

The EGR can cause issues. However, there are many other things that can do the same thing. Tell me, is the check engine light coming on? When was the last tune up?

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Wednesday, April 23rd, 2014 AT 11:45 AM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Also, let me know if you checked for vacuum leaks and the idle air control valve. Plus, let me know the RPM's in which the engine idles.

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Wednesday, April 23rd, 2014 AT 11:46 AM

THEPCMANIACCC

MEMBER
3 POSTS

Vibrates at idle ( 800rpm). Haven't checked for vacuum leaks or idle control valve.

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Wednesday, April 23rd, 2014 AT 11:52 AM

THEPCMANIACCC

MEMBER
3 POSTS

Also no lights coming on

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Wednesday, April 23rd, 2014 AT 12:37 PM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Since there are no lights coming on, that is a good indicator that the problem isn't related to a sensor or a misfire issue. You mentioned that you notice it mostly at an idle. Therefore, I need you to start with the basics. Check to see if there are any vacuum leaks that can be causing the rough idle. If the idle is erratic and doesn't stay around 800 rpm's, then check to make sure the IAC is working properly.