2006 BMW X5 4.8is with 37,000 miles... N62 Engine
After the engine has idled and warmed up from a cold start or sitting for several hours, sometimes there is a sudden drop followed by a spike in the engine rpm as captured in this clip. The spike happens when rpm is being lowered by the computer. No yellow or red lights go off.
http://www.youtube.com/watch?v=lCyXANcj9xQ
The dealer tells me since they can’t duplicate this there is nothing they can do about it. Anyone has experienced this issue??? Any idea what the culprit is?
Thanks a lot,