Help with automatic transmission Subaru outback 97

Hello:

I need help with the automatic transmission of my Aubaru outback of the 1997 American version, it has a 2.5L engine.

A day behind, the transmission was a half strange porto but it worked, suddenly it stopped in the engine, turned on again and nothing. But the next day in the morning he turned on and moved about 50 mt and stopped and did not want to light, there was no motor light (Check Engine) and only the light of the Tranmision (AT Oil temp), after about 30 minutes he turned on again and the light of the ransmision began to jump into a constant pattern, when he turned it out and turned it again, I had it again. I am sure, please I need help, since the car is borrowed and I must return it working as it was ... thank you very much