Rear wiper has a mind of its own?

[95maxrider]

The rear wiper on my wife's FX35 seems to have a mind of its own. This is a video of it on the intermittent setting. It runs fine for a few passes, and then gets stuck, only jumping a few inches at a time. Sometimes it also stops working completely in the On setting.

I have tried two different wiper motors, and they both behave the same way, so I'm beginning to think it's the wiper stalk. Any thoughts?

 

[JiBay]

I don't know how is this mecanism but maybe is not the motor but the gearing ... like on the column and the seats ?

 

[QX70lvr305]

Sounds like it could be the speed controller. The fact that it works fine for a moment then starts acting up tells me there is a part that is probably failing maybe getting hot after some use and starts to give problems, if you’ve changed motor I would look at the speed control module.

 

[95maxrider]

Sounds like it could be the speed controller. The fact that it works fine for a moment then starts acting up tells me there is a part that is probably failing maybe getting hot after some use and starts to give problems, if you’ve changed motor I would look at the speed control module.

Is the speed controller a part of the wiper stalk or a control module somewhere in the car?