How old is the trans
fluid? I would try changing the transmission fluid. I had the same problem on my 95 auto it would slip and shake quite between shifts. Doing the flush made a huge difference.
1995 3.8L V6 Auto- Laser Red
- American Muscle custom cold air intake
-ASP 25% underdrive crank pully.
-Magnaflow catback exhaust with PaceSetter V6 Mustang Cat-Back Adapter Kit
-Motive 4:10 Gears with FRPP T-loc
-17inch Cobra R wheels with 275 tires
-Dyno tuned by Modular Depot
-FRPP aluminum driveshaft