OK, so my 1992 Camaro had a windshield wiper issue, where when the switch was on, the wipers wouldn't work until you wiggled the stalk. So I bought the LAST windshield wiper switch from C.I., which solved my original problem. Fast forward a year, and now when I turn the wipers to anything but "off" the washer goes off and the wipers go on low speed. After 10 minutes or so, this will stop, and for the rest of the day the wipers and washer will work properly, intermittent settings and all. If the car sits overnight, the process repeats in the morning. I'm leaning towards the circuit board on the wiper motor, as I figure if it's a short it would do it all the time, not just when it wants to. Any other ideas? Please, I'm stumped!

 

So you're saying initially, any setting but "off" will cause the washer fluid to spray on the windshield and the wipers to be on the slow setting, but only for about 10 minutes?

If that's the case, I'd suspect the switch itself is acting up (despite you replacing it.)

I don't know the exact wiring so I may be wrong, but I believe the switch sends power directly to the motor on the washer fluid reservoir. Also, I believe the switch controls the power to the wiper motor. I don't believe these motors have a relay though, I believe they have an internal timing switch/control. It's possible your motor may be going bad if the timing is off, but I'd think it's also possible the switch is going bad as well.

I don't believe the washer fluid motor wiring is connected to the wiper motor either, but I could be wrong. I believe the motor is very simple to replace (it should be bolted on the firewall more on the driver's side) and should be somewhat plentiful in junk yards if you decide you want to try a different motor.