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Re: 86 735i: what pump(?) is this?... (archive)
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Posted by Hanif on November 13, 2000 at 03:16:18:

In Reply to: Re: 86 735i: what pump(?) is this?... posted by Jon on November 12, 2000 at 19:18:45:


It is your HVAC vacuum pump. You have a leak somewhere if it runs more than 45 seconds. Look for the leak as the pump will burn itself out if left running to long. This pump is quite expensive and sometimes hard to find.


It is definitely running more than 45 seconds. This is a bit of a new adventure for me, so I would appreciate some input. What kind of leak am I looking for? What does HVAC stand for, and what does it do? I would appreciate some tips on how to diagnose the this problem...

Thanks,

Hanif.



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