My Promaster does not allow me to roll freely down a long grade for example or when I lay off the throttle There is always a mechanical drag slowing me down as if I downshifted or had a manual transmission (which I do not. Standard 6cyl gas 6 speed auto). I simply do not glide as an automatic should allow. I know this is the drivetrain because when I put the vehicle in neutral I can feel it slow down at a much lesser expected rate. We are not talking about wind or road resistance here at all. Another way to express this is that if I am going 50 mph and I pop it in neutral I might glide 1,000 feet. But if I go 50mph and lay off the throttle while keeping it in D I might roll 500 feet. I am wondering if the van is not really going into 6th gear? Or is there a faulty setting keeping the converter locked up at all times? I even lose MPH on some steep downgrades when backing off the throttle, where as I gain MPH on the same downhill roll when I pop her in N. I know this is not only odd to drive but killing my MPG. Any thoughts out there?