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Message: <blockquote data-quote="santhira" data-source="post: 6423" data-attributes="member: 3170"><p>Hi Guys  Recently i found that when the car is idle, the RPM meter goes up and down.. some times the car just stop. If i try to ram the car, RMP increase very slow ... feel like heavy... while driving found not smooth... is it due to Air flow sensor or other problem.. can anyone please advice...  Important not... when the Rpm meter goes up and down .. can see a black smock with drips of water flowing out of the exhaust..... E36 325i 1994 model... any advice plsIf air flow sensor .. anyone willing to sell or where can i get it .. how much roughly it will cause.</p></blockquote><p></p>