I have a 1990 Ford Ranger with Power Windows.

Today when I went to raise the driver's side window it would not go up.  I
heard a clicking sound as if something was slipping or not engaging.

If I grabbed the window with one hand while holding the window in the up
position I could pull the window up.

I tried it again; the window goes down fine but makes a clicking noise when
I try to raise it.

One other thing that I mentioned.  If I lower the window down about 70 % of
the way and then remove my finger from the button the windows slowly slides
down another inch or so.

I removed the door panel and am looking around but can't see much I might
need a mirror in there to look around.

Any ideas?

I guess the motor is fine, maybe the regulator or the window lift gear?

Thanks