ok... just wanted to see if it's just my car, or if it's common in these cars.

my wipers work fine for the most part.... until I hit around 70-80 MPH. It's like the wind is too powerful and over powers the wiper motor. Say I hit my washer fluid as I'm cruising at that speed (or I clean off the windshield), my wipers will over extend (almost hanging off the side of the car, past the windshield) and then when it goes to turn off it will stop the wipers in it's fully extended position (where it's perpendicular to the cowl) instead of at the bottom of the windshield where its parallel.

wierd huh? Then when I slow down to around 65 or so, turn the wipers back on... and then off, they will go back to the normal position (tucked in at the bottom of the windshield)

any clue? does yours do this too? or am I the only one?

I had the same problem. The 'park' sensor inside the motor is no longer good.....at least that is what was wrong with mine. I had a brand new motor from another car that I had, so I put that in, but since you have a 93, and all the motors that are out there now are 95 or newer you will also need an adapter kit.