I've a '97 850 wagon, and it has started to make a load humming sound whenever I turn on the air fan (for heating). The sound disappears when I turned off the fan.
Does anybody know the cause?
Thanx in advance.
The bearing in the motor for the fan is bad. You can try fixing it with lube, but a new one is probably the way to go.
This also happens to me, but whenever I have it on the higher settings, 3 or
It depends on the car and whether you do the work yourself. On the 850 an experienced guy can do the heater motor in less than an hour.
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