I was doing a search online about the problem and I found this...
"The only other thought I have is a faulty pulse module which is part of your windshield wiper motor and is enclosed in a black plastic box with 3 or 4 screws holding it to the motor assembly. (This pulse module can be purchased separately and does not come with the motor). This is a circuit board which controls Wiper Park, intermittent wiper speeds, and washer pump/wiper sweep operation. I have seen this many times."
I'm going to pick up one and give it a try and see if that fixes my problem
