HI, I live in Uruguay - South America and I own a 1999 Chrysler Stratus (Dodge in USA) with a 604 automatic autostick transmission.
I worked fine till one day it disengages, I stopped the car, put it in park, tried various stick positions till it worked again… for a block or two. This happened 5 or 6 times till I had to call the car-service truck transport and get it to my place.
The transmission fluid is very expensive in my country so I’m trying no to open the bottom of the case very often.
I replaced the filter, cleaned the entirely valve body and the solenoid package, both of them seem to be in good condition internally, no mud, no metal detected in fluid, clean filters.
I didn’t get the transmission out of the car.
Any suggestions would be accepted.