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Re: 1991 BMW 535i A/C blower quits for 20 seconds
Posted to Technical Discussion Forum on 9/25/1998

I had a Volvo 740 that did something like that a while back. Turns out there is circuit to cut out the blower if the engine is not hot AND the inside air is below 40F or so. (To keep from blowing cold air in the winter)

In this case, the engine temp part of ... Login to read more.