5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
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I recently purchased a 540i with an automatic trans that has 116k. When i sit at an idle there is a loud whistle noise that is coming fron the converter/bellhousing area. If i accelerate above 1000 rpms the noise goes away but returns when it goes back to an idle. Any help would be graetly appreciated.
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