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Re: Another HVAC ??? Solved Yet?? obscure possibil (archive)
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Posted by Kent on January 24, 2001 at 12:22:02:

In Reply to: Another HVAC ??? posted by Tom M. on January 21, 2001 at 12:31:26:

I spent hours diagnosing a fuel pump on a 320i that had voltage at the pump and everywhere else but only actually ran when jumpered directly to the battery. The cause was a glass fuse that had corroded slightly inside the glass. It got voltage but not enough current. I replaced the fuse(should have done that first) So anything in the path to you blower that could have a very weak contact or lowered current carrying capacity could be it.

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