Does anyone have any ideas on this? Before I put the car away for the winter, on the last drive, the wipers turned themselves on. Took a swipe and stopped. Took another swipe and stopped in the middle. I pulled out the wiper switch and it was worn out. No locking positions for each speed or even off. Figured this was the problem. Replaced the switch when the weather broke thinking this was the problem. Apparently not. Wipers still do what they want when they want to. I have no control. Turning the switch on and off doesn't seem matter. They will be fine for a couple of miles then all of a sudden they go on. Not running like you would have them on for rain. Very jerky motion. Does this sound like a motor problem or a mis-wire somewhere?

 

A switch just completes the circuit giving the motor power. It sounds like there is a raw wire somewhere giving the motor power more or less bypassing the switch. Probably when you hit a bump just right it makes connection.

 

Well, for starters the mind reading thing isn't working, so telling us the year, model, single or dual speed, pulse or not would help.

Note that starting with the early 1960s, the circuit is NOT a simple switch that provides power. There is a hold-in relay that keeps the motor running after you turn it off to park the wiper blades. This relay can stick, among other failure modes. There is also a cam in the motor that actuates the park contacts. Read the Chassis Service Manual section that describes the wipers and troubleshooting.

 

1967 442, 2 Speed. No pulse

 

Also sounds like a lot of kids.

 

No park, either.

 

I never responded with what I found to be the problem. In case anyone was wondering. On the wiper motor, bottom screw was loose making an intermittent ground. Tightened, problem gone.

 

Lucky bugger! TY for the follow-up.

 

Yes, thanks for letting us know. That'll probably help somebody out in the future.