I installed a new wiper motor on my 97 T/A the other day after they started parking in the "up" position. The wipers now work fine with the exception of when they are in one of the intermittent settings. Now they go to the same place in the up position that they always did but when they go down they go to the spot they used to stop at during the "pause" and then jump up about 3-4" on the windshield. When I turn them off, they jump back down 3-4" and then go to the normal parked position. Any ideas what might cause this cause I am stumped. Thanks

Matt