Stall Test
CAUTION:
Perform test at normal operating fluid temperature 122-176°F (50-80°C). DO NOT
continue test longer than 5 seconds.
- Object of test is to check overall performance of transmission and engine by measuring maximum engine speeds in "D" and "R" ranges.
- Block front and rear wheels. Connect engine tachometer. Apply parking and service brakes. Start engine.NOTE: If stall RPM is more than 600 RPM lower than specifications, torque converter may be faulty.
- Shift into "D" range. Fully depress accelerator pedal. Immediately note highest engine RPM. Specification is 1800-2100 RPM. DO NOT perform test longer than 5 seconds.
- Repeat test in "R" range. Check for insufficient engine output or defective stator one-way clutch if stall speed is low but the same for both ranges.
- If stall speed is higher than specified in "D" range, front clutch may be slipping, one-way No. 2 clutch may not be operating, line pressure may be low, or OD one-way clutch may not be operating.
- If stall speed in "R" is higher than specified, rear clutch and/or 1st and reverse brake may be slipping, line pressure may be low, or OD one-way clutch may not be operating.
- If stall speed in "R" and "D" is higher than specified, line pressure may be too low, fluid level may be wrong, or OD one-way clutch is not operating properly.