Schmooey

I did not have any intermittent wipers on my 1984 944, so I replaced the relay and now I have them working fine. I was hoping it would also fix my other wiper problem, which is that I don't have any high-speed wipers, but it did not. (Not that I was expecting it to, but just hoping.) So everything on the stalk works – regular speed wipers, intermittent, the spray washer – except the high-speed wipers, which is the uppermost position of the stalk.

Van

As you might have figured out, the intermittent feature is controlled by a timer relay. However, the low and high speeds are directly wired connections to the wiper motor. Find the right wiring diagram for your year online (both early and late diagrams can be found in the factory service manual), and watch this video on how to read it. Then you can pull the plug apart and both check: are you getting voltage at the right wire when the stalk is at high-speed? And, if you send 12 volts from the batter to the right wire on the motor, does it move in high speed? This will help you narrow down where your trouble lies.