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fan noise

Heating and Ventilation

Vehicle Information: Year: 1987; Engine (Size, Modifications): 3.3 930 turbo; Total Mileage: 35,000;

My 930 is very original with low mileage, but I am not the original owner. I am enjoying it very much and am restoring small items. In that regard, please advise on one point. . . When the car is started (with heat and AC off and all dash air circulation levers on off), a fan sound can be heard. Since I was not the original owner, i don't know if this is normal. I think it's from behind the dash. I seem to have no control over it (with the controls I ahve tried to increase or decrease its sound). Please advise if this is just the fresh air fan or if I have something else going on? Do I have a connection or contact that is stuck? Thank you much. msm

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