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Never did valve stems however..
This is the story..
I started having the Malfunction Transmissions failure code last year .
the car would crank but would not start like no gas.
After several tries it would start and run great.
I Took my car to a Trans Shop he serviced it and programmed it. ( I hope he told me the truth that he did the job)
The car ran well for many months ..
The problems started again this year a couple months ago all fail codes showed up.
My friend who is a BMW mechanic read and reset the fail codes several times and concluded the failures were correct .
Last month he replaced all Camshaft gears, Vanus solenoids chain tensioners, oil, coolant , etc,,, all needed gaskets and seals.
BTW my car has 155K miles.
Battery was replaced 2 weeks ago.
when the car is cold in the morning it runs like brand new.
However after driving 30 min or so or if i drive and park the car, sometimes it would not start and the car shows up with similar issues and failure codes.
And puts the transmission in safety mode of 20-40 Miles. It won't change gears and won't allow Cruise control (gives the code- Cruise Control Failure)
Also a few days i drove over a bump and all fail lights including key and trans and DBC , etc... all fail codes showed up. But went away after driving a little.
This is my story..
I believe there is a board or connection issue like short or possibly grounding issue .
Best,
Michael
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