1999 Rover 75 cdt diesel slightly low idle problem

[rumpelstiltskin]

Hi all,had a 2.5 v6 one of these and now have the BMW turbo diesel motor version and i love it,got it for £800 as it needed MOT,d and it flew through!Anyhow,it runs perfectly but there's an annoying vibration comes up through the dash at idle,and only at idle.This must be some kind of harmonic balance/vibration thing cause if i touch the throttle and increase the revs by about 50rpm to the 'recommended' idle(780 +/- 50rpm)the vibration goes away!Is there any way to slightly increase the idle on these,i feel there must be some 'mechanical'way to do this but someone told me you can only do this through one of those T4 testbook computer things?

[savvy]

Try cleaning the MAF and the PCV valve, very common.

Very well documented on the 75 forum