I need some transmission advice.

[BanginOnABudget]

So i have a 90' cherokee, 4.0 amc I6, with the auto 3spd trans, when i get on the throttle in my jeep, i can rev to about 1700rpm, then its like it slips into neutral, and i have to rev to about 3500rpm before it grabs again, and if i have the throttle down, holding at 1750-2000rpm in 3rd, and i let of the pedal slowly, it will shift down into 2nd, and wont shift up again until i get it to about 4000rpm, its been like this since i bought it last year, im more of an engine guy, but it seems like a bad torque converter to me, but like i said, im more of an engine guy, im not too familiar with the workings of auto-trans', so if you guys know what i could be, let me know. it has about 250k on the engine and trans so when i can i will be swapping it for another motor and trans with lower miles, but i'd like to know what the problem is before i swap.

any ideas guys?

[Gingeriffik]

My first guess would be a bad/worn out clutch pack. Once the clutches are worn, they can no longer keep friction, thus causing the slipping. Is it in 3rd only. If so it may be a worn band or a servo issue, that is if you trans has a band, it may not.