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Interior fan speed erratic due to faulty fan control resistor on Porsche 928

Problem Description and Possible Solution

When changing speeds at random or while going over bumps, the interior fan speed can be erratic. A replacement fan control resistor is required.

Problem Data
RepairPal Verified
Average mileage: (–)
5 model years affected: 1990, 1991, 1993, 1994, more1995
5 people reported this problem