1997 Ford Expedition transmission problem

[Bob B]

when i turn the knob on the dash to engage the 4 wheel drive nothing happens. NEED HELP PLEASE

[MELISSA]

MY TRUCK MAKES A WHINNING NOISE LIKE IT IS THE POWER STERING BUT I HAVE HAD IT CHECKED AND THEY SAY IT IS NOT THAT. THIS SOUND ONLY HAPPENS WHEN THE GAS IS PRESSED WHILE IN DRIVE. IT WILL IDLE JUST FINE AND AS LONG AS YOU DON'T PUT IT IN A GEAR IT WANT WHINE.
**HELP**HELP**HELP

[Mee]

MELISSA wrote:

MY TRUCK MAKES A WHINNING NOISE LIKE IT IS THE POWER STERING BUT I HAVE HAD IT CHECKED AND THEY SAY IT IS NOT THAT. THIS SOUND ONLY HAPPENS WHEN THE GAS IS PRESSED WHILE IN DRIVE. IT WILL IDLE JUST FINE AND AS LONG AS YOU DON'T PUT IT IN A GEAR IT WANT WHINE.
**HELP**HELP**HELP

Sounds to me like you might have a bad U-Joint

[ben]

my 97 expeditions xl 4x4 transmission gave out. it only run in reverse, won't go forward. what the solutions?