W211 om642 DPF normal idle?

[rub12333]

I have a 280 cdi and it always idles at exactly 700 rpm when warm. Read a few forums and some people were getting 580-650 rpm when warm, but they were mostly newer 350 cdi models. I doubt it's abnormal, considering how it always idles at 700, but just wanted to be sure. Thanks.

 

[Dean Fletcher]

I have a 280 cdi and it always idles at exactly 700 rpm when warm. Read a few forums and some people were getting 580-650 rpm when warm, but they were mostly newer 350 cdi models. I doubt it's abnormal, considering how it always idles at 700, but just wanted to be sure. Thanks.

My 250 cdi used to idle at 800. I don’t think you have much to worry about.

 

[LostKiwi]

My 350CDi idles at around 700 so I wouldn't be overly concerned.

 

[rub12333]

My 350CDi idles at around 700 so I wouldn't be overly concerned.

Thanks. Just wanted to be sure

 

[malcolm E53 AMG]

My S212 idles at 650rpm and 800rpm during a DPF regeneration

 

[Doug1234]

06 Jeep grand Cherokee om642 no dpf idles at 620 verified on an icarsoft scanner .
Are these different values due to gearing ratios ? , the Jeeps only geared for 120mph flat out and rolls up to 5mph in first on its 722.6 box so any higher revs would see a marked increase in speed