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Re: When I switch off ignition... (archive)
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Posted by SantaRosaDoug on March 09, 2001 at 22:52:57:

In Reply to: When I switch off ignition... posted by Big-M on March 09, 2001 at 19:18:03:

I'm not sure, but I BELIEVE this is an auxiliary fuel pump charging the fuel distributor in preparation for when you will start the car. I've heard this sound in other vehicles I've owned where the manual defines what it is (which BMW does not share with us).

Anyone else know for sure?

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