1993 Ranger 3.0l should have the A4LD transmission, 1985-1994 Rangers, if automatics, all used this trans
No end of issues for these, but they are getting old.
Nothing specific comes to mind for your symptom.
Best bet for any automatic would be to change fluid and filter and see if problem goes away or changes.
Last edited by RonD; 03-09-2014 at 01:33 PM.