Stall Speed Test Results:

Stall Speed Is Same In Both Positions, But Less Than Specified: Engine output may be insufficient. Faulty torque converter.
Stall Speed High In "D" Position: Low line pressure. Faulty one-way clutch No. 0 and/or coast clutch. Faulty forward clutch. Faulty one-way clutch No. 1.
Stall Speed High In "R" Position: Low line pressure. Faulty reverse clutch. Faulty 1st/reverse brake.