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1989 964 A/C Problems

Heating and Ventilation

Vehicle Information: Year: 89; Body Type: Coupe; Total Mileage: 122k;

Can anyone please tell me which servo motor does what and in what setting? My a/c is working but I only get cool air on the passenger side vent.Driver side and both center are blowing hot air only!I have read a lot of stories similar to mine but cant seem to figure these little varmits out!! Any help along these lines would be so "cool" !!

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