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The car is a 1990 745 Turbo with 171K. The problem: the heater/a/c blower/fan does not blow as much volume of air as it should on high. How do I know? I also have a 1990 740 non-turbo. The non-turbo heater/a/c blower/fan puts out a lot more air on high than the 745 does. I have changed the fan speed switch, changed the resistor thing a magoo behind the glove box, installed a new heater/a/c fan motor and the 745 air still comes out at a lower volume than the 740. Tonight, I switched the fan motors. I put the new motor in the 740 and the old motor from the 740 in the 745. The 740 still puts our more air. It wouldn't be so bad but the 745 is black and it needs all the air volume it can get on hot days. $20 for the guru that solves my 745 low air volume problem.
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Leon Ramseur in NC, 1995 945, 1990 760, 1990 740 & 1990 745. 90 740 FOR SALE.
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