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Interior fan woes
Dieselers,
About 2 years ago I replaced the HVAC fan (heater / AC) in my 740 as the bearings seized up and would not spin. Now that we are experiencing sub 20 degree temperatures daily the fan has again seized. I pulled it from the car and noted that the windings on the motor are rusted, and the fan "breather" tube has a dusting of rust. Naturally this has me wondering, where is the rust coming from? Condensation formation? A plugged drain in the cowl? I would like to figure this out and correct the problem before replacing another fan. Being unfamiliar with this section of the vehicle, where could water enter that fan housing? Are there any known problems with the 700-series cars regarding cowl drainage? Any comments / ideas in general? Thanks,
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Jim 1985 Volvo 740 GLE turbo diesel |
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