If this is an automatic shifter on the column, I just had this done to my 93 Aerostar at the dealership simply because it required taking the steering column apart and I wasn't comfortable doing it regarding the safety issues. (Air bag module, wiring etc.) If you are comfortable to do it your self, you can try asking your Ford dealership service department if they would give you a copy of the parts breakdown and diagram. I have been surprised at how some will help a great deal with parts breakdowns.
Really the easiest way is to change the steering column out, get a decent one from a savage yard and a good how to book and away you go. I had the same problem on my '93 and this was the best solution.
Why is 92 Dodge Colt gear shift hung in fourth gear?
Usually on steering column lower if column shift, next to floor shift (remove panels) if floor shift or at transmission integrated with reverse light switch
transmission needs to be rebuilt or replaced, sorry
It is 21 gallons.
where can i find a vaccum line diagram for a 1992 ford aerostar with a 3.0 engine
Decode the 8th digit in the VIN.
Near where the motor and transmission connect
Adjust or replace the back up light switch, located somewhere next to the shift lever.
replace the clutches for third and fourth
r-12
shift soloinoid no. 2 or 3 would be stuffed it will sost about 200 to 300 ausi dollars to fix it