Question about 1984 Porsche 944
OK, it is unlikely that both motors would go out at the same time and you check the electrical connections with a test light to see if flipping the switch one way or the other gives you a light or power on the circuit. If it does and the motor doesn't turn, then you have to replace the motor or motors.
You can also use a self powered test light or a multimeter with a continuity beeper to test if the coils in the motor are ok. Disconnect the motors from the harness and then probe the connectors to test the wiring within the motor.
Hope this helps.
Good luck on your purchase. I like Porsche motor cars.
Posted on Jul 20, 2010
The first step on trouble-shooting power window is to check for free play. Check for forward and backward and side to side movement (free play) on the regulator. Lube the two most import spots on the movement of the power window with grease. (CIRCLED IN RED) The second weaken spot on 944 window are the gears inside the motor. Before you spend money to purchase a new driver and passenger side motors you should hear for noise//sound when you press on the power window buttons. You should remove the motor and lube the internal gearbox with white lithium grease. I use CRC motor cleaner to clean test the motor brushes. Carb.cleaner is also good for a this type of clean up. There are complete unit at eBay for under $50 per side. You should clean and test your gearbox first.
Posted on Jul 20, 2010
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Posted on Jan 02, 2017
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