I have a friend who has a '96 that has a lot of throttle positioning sensor troubles. Since it was new, he has had 6 sensors on it. He's having trouble with it now. Has anyone had this trouble on theirs? He doesn't power wash it, so that was my first guess. He wants to get ahold of Cummins directly, but I think that would be a Mopar thing anyway, wouldn't it? If it is a Cummins thing, does anyone have a customer service phone number to Cummins? Thanks