1995 Jeep Grand Cherokee 4x4. 5.2 with automatic trans.
It will move in all gears when you first start it, but sounds like the front pump is whining?
When it gets warmer/operating temp. It wont move at all in any gear and I don't hear the whining noise . It feels like its in neutral in all gears...
Fluid is at correct level and it looks good, no burned fluid or debri that I can see in fluid.

Thoughts?