since the cold snap in NH and then Mo, truck will start (block heater used),
after shifting into rev or drive, the truck does not engage and the accelertor pedal will not revv up the motor, have to shift back into park, hit the pedal then shift into gear before it will go?

anyone have similar problem or suggestions. does not happen every time, but did it twice today (temps in negative 5 range) the second time it happened put truck in reverse and it engaged at idle speed but would not accelerate until i put in park and then reverse.

02 7.3 210k miles