1994 ford ranger xlt 4x4

[sle44]

so here is the story im driving to work today my truck starts slowing down. i still have it in drive while i push on the gas engine just revs not moving at all. i parked it went through all the gears its an automatic. when i put it in drive and hit the gas the engine just revs and spedometer goes to 35-45 mph all while truck is sitting. when i put it in to 4 wheel it makes a terrible noise. could this be my transfer case or something else. thanks any input will help.

 

[4x4junkie]

The speedo going up like that is interesting...

I would check for a failure in the rear axle or driveshaft first before the t-case.

 

[link040188]

the t-case making horrible noises could be because the shaft is spinning too fast when the truck tries to go into 4x4 and the shaft would only spin if somthing is broken further back.