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I understand your point about Volvo installing this fan in their 940 models, I see them all the time in the wrecking yards. Yes, that particular vehicle that killed the battery was a Chevrolet. If I could go back in time I would have installed a higher output alternator and 2 batteries. I feel like looking into it, but I'm almost sure Volvo uses a higher amp alternator in their 9 series models. When I killed my battery I did it at night with the lights on and it was a warm night. Stop and go in warm or hot weather like we have on the west coast may bring the cooling reliability factor of an electric fan into consideration. If your in cooler weather and your not in large traffic jams your probably okay. Doing some real driving with an electric fan (stop and go, climbing 10 mile hills, possible traffic jams) in our deserts (trip to Las Vegas) out here on the west coast in the summer with 100 degree temps might be a little scary as you are really testing that electrical system. As you probably already know, Volvo does have electric "pusher fans" installed in conjunction with their manual fans on their newer 240's and older 240 Turbo models. Of course these should be designed to assist with A/C. Others use them to increase Turbo boost.
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