BMW 1-Series Forum (F20) 135i - > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > 2014 F20 116i shaking/rough idle
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      02-22-2021, 02:32 PM   #1

Drives: BMW E81 118i F20 116i
Join Date: Jul 2020
Location: South Africa

iTrader: (0)

2014 F20 116i shaking/rough idle

Hi all,

I have an interesting problem, and my mechanics all seem to be stumped.

The car has quite a bad vibration/shaking on idle only when warmed up. There is nothing when driving to indicate an issue. The revs don't bounce around at idle either and there is no power loss or check engine lights. Just a vibration which is really irritating.

I'm getting the following error code when the vehicle is left to idle for 5 minutes or so when warm:

133710: valvetronic, eccentric shaft adaptation. Lower limit position reached.

When this error code is present, the idle completely smooths out and there is no issue whatsoever. Clear the error code and the rough idle/vibration returns. I just drive around with this error stored and the car is perfectly fine.

I'm not sure whether I should be chasing this but it's weird to me that there is an error code stored. If I didn't have ISTA I wouldn't even know there's a problem(?)

Anyone have any insight as to what might be causing this or where to look? ISTA mentions coking on the valves, but they are absolutely spotless so it can't be that.

Thank you!
Appreciate 0
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