'81 911 SC wiper noise / not working
 

My wipers made a clunk clunk noise and stopped working.

I've torn out the ventilation system but can't figure out the problem. If I turn on the switch, the wiper assembly vibrates and makes noise, but the wipers don't move.

I'm actually able to grab the wiper arms and move the wipers a few inches. When I do, the wipers work for one swipe across the windshield, and then when they get back to the park position they get stuck again making the vibration noise.

Thoughts?

let the motor park and turn off the key. place the wipers where they would normally park. pop out the speedo. get a short 10mm wrench and reach in and tighten the nut on the wiper motor that attaches to the mechanism.

I just tried and it was already fairly tight.

So I pulled the wiper motor and then took a peak inside. The large gear's teeth are chewed up in one area of the gear. Which would explain why I could move the wipers and then it would catch the good teeth then stop again on the bald spot.

Guess I'll look for a used one since they're almost $400 new.


Thanks