Before I tear in to this I thought I would see if anyone has some thoughts. On the way to the cruise-in at Shilshole my wipers would only go about 2/3 up and then back down. They would do this over and over but only go about 2/3 of the full stroke each time.

I've never looked at the wiper system before other than a casual glance while working under the dash. What should I look for and if I drop it, should I gather some parts to rebuild? I have the 2-speed electric wipers.

I don't really want to put in the intermittent wiper conversion. The 2-speed stock is good enough for me.