R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

R230 judder at low speeds and 10,20,30,40,50,60,70,80 but not 90 etc.STAR shows no er

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Old Nov 16, 2020 | 08:46 AM
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R Class R320
R230 judder at low speeds and 10,20,30,40,50,60,70,80 but not 90 etc.STAR shows no er

Hi, just incase any of this makes you think of anything.

things that have been changed.

two front bearings and abs leads
turbo actuator
egr valve
transmission oil and filter.
brakes and pads and shoes around.

so car idles at 900 when it feels like it and only some times idles at the correct 650. mercedes garage with start put it on test and reset all the details to default to check. they couldn't see anything strange other than idle been high. though the left bearing by another garage has not been fitted properly and is making a right noise.

They mentioned it could be accelerator pedal but not sure. I haven't bought one yet. plus I only have it connected by one bolt. if any one knows the bolts required I can buy some more. as they are plastic raised bolts.

this strange issue has only come about when the actuator died and the egr. before limp mode all was ok. I read about inlet valves as they are plastic etc causing issues but im at a loss.

Im trying to try and get ideas of what it could be. i thought valve body and hoped for a star code but not a sausage about the transmission. they are thinking throttle pedal as I mentioned or inlet based. the dpf has been deleted as I have found out.

if you need to ask anything to try and guess or been there got the t-shirt moment let me know.

thank you in advance everyone.
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