Quote:
Originally Posted by -c-
Yea I was talking to the Forman at the dealer and he told me they get tons of older x5's in with this issue and 9 times out of 10 it's a vacuum leak somewhere, so now they just replace all vacuum lines as part of a maintenance service. They said the rubber lines are very bad and deteriorate because of the heat and age and start to get hair line splits in them that could be anywhere, some you can't even see so they just do it all and it fixes the problem, now this is the non M versions he was talking about but it could be something similar.
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I'm hearing this more and more.