Dear Chris, Check the transmission fluid level when the PRV is hot. Fan should cycle on and off. is it low? Is the color red? Does the fluid smell burnt? Can you notice small metal shavings when you wipe off the dip stick? Remember that the hoses are now 18 or even 19 years old. Your car could have developed a leak somewhere around the hoses. Transmission fluid does not evaporate so you could have developed as leak. Dextron II is no longer available use Dextron III. WHEN you change the fluid it is necessary to "flush" out the dextron II and refill the unit with Dextron III. That means changing approx. 9 quarts inside the transmission torque converter, pan, etc. The pan holds 3.9 qt. I have an Automatic LHD #3713 Sept 81 Build. My car was in storage for 14 neglected years. The car was covered with dust, etc., etc. Needless to say that it required a lot of work. The original owner thought he was preserving the car by storing it and forgetting about it. On my way home the day that I took delivery the transmission started to shift all over the place. It would jerk, then down shift. Then immediately it would up shift, then down again. It was a long, slow ride home. When I arrived home I changed the transmission filter, gaskets and both fluids. While I was "inside" the transmission I changed out the transmission computer. These computers have a tendency to fail without notice. I keep an extra on hand. This could be the problem with your automatic. I have heard from other automatic transmission owners who have complained about their transmission troubles. The first problem area for the automatics are usually the computer assembly. Furthermore my automatic transmission was not happy with the new fluids filter and computer. Shortly thereafter the unit broke an internal drum and the internal clutches followed. The replacement was in the area of $4,000. Evidently driving on the bad computer causes the internal components to develop hairline cracks inside. I doubt that "Dusty" needs a new computer. Hopefully it needs new fluids and filter kit. Best Regards, Mike