Thanks for the reply. That'll be my next step. Yeah, I'm glad I got the flush done, it needed that anyway. Like you said, it may not be transmision related. On the day I picked up my Expedition from the dealer, the service technician said the old tranny fluid wasn't that dirty and it did not have an odor of burnt oil, which normally would have indicated bigger problems with the transmisson. I was thinking it might be a bad sensor, but the check engine light has not turned on.