Was just wondering if anyone knows what a humming noise from the back
of the car could be? I only hear it after shutting down, and it can
only be heard for 10 seconds or so, which means I never get a good
chance to locate it exactly, but I can hear it's from the rear. Sound
like a pump (?) summing for a short while, but not always...
Car = BMW 528 Touring 2000.
Have you checked to see if Bill Clinton and Monica have hitched a ride?
My guess is that there are ventilation system flaps that are operated by a
motor or by vacuum, and you are hearing these flaps close. I would not give
this issue another thought ... (and I'll try not to think of Monica either
<crap, now that image is burned into my brain>.)
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