Hi all. I recently replaced the blown motor and tranny mounts on my 2007 w211 E320 CDI (labeled Bluetec but isn't). It actually had a pretty smooth idle prior to changing out the mounts, despite how bad they were. Afterwards, it is a much rougher idle (kind of hurts my head if I am leaning back on the headrest). Even my wife commented on it to me, so it isn't just me being oversensitive to things.

Items of possible note:

* No current or pending codes (Autel MaxiSys Elite scanner)

* MPG and performance seems normal

* When removing the cat to replace the right side motor mount, the DPF upstream temp sensor broke (was clearly on last legs once we looked at it). Replaced, tests fine.

* Mounts are Lemfoerder

Any thoughts on what to look at? Something I might have missed or done wrong?

Thanks!
-Bruce

__________________
1976 240D [W115.117/616.916] (acq 11Jun76)
1990 MB 300D 2.5 Turbo [W124.128/602.962] (acq 4Sep15)
1991 SL250D (ex-300SL-24) [R129.061/OM602.962/722.6, was M104.981] (acq 25May12, converted to diesel)
1993 Jeep Cherokee [XJ] (acq 12Apr14)
2008 E320 CDI [W211.022/642.920] (acq 27Jan24)

-- Deceased...
1993 300D 2.5 Turbo [W124.128/602.962] (totaled by Dominos driver 28Mar12)
2007 E320 CDI [W211.022/642.920] (totaled 18Dec23)