Hi all...Frustrated Mountaineer owner here--My 2002 Mountaineer has been stalling at 70 MPH on the freeway. It staills at slow speeds, at stop signs etc. Dealer CANNOT get it to fail of course. It appears to be fuel related. I have seen "Fuel error" message on the display. It will restart immediately. It can run fine for a couple of trips, then it will fail. I put a can of Gummout cleaner in the fuel and it's working through that now. Any ideas?