The driveshaft bearings on higher mileage vehicles may become noisy.
Resources for the Repair and Maintenance of your 1991 Porsche 944
1991 Porsche 944
1991 Porsche 944 Problems
Due to a broken plastic link at the servo motor for the heater control flap, the interior temperature can become wildly erratic.
Due to a failed resistor pack, the HVAC fan may only operate on the high speed setting.
Suspension components (including control arms, boots, and ball joints) are critical and require regular inspection.
The cooling system must be inspected regularly, as small leaks can develop at the reservoir. The heater valve and fan operation should also be inspected.