Stall Speed Test
CAUTION:
Perform test at normal operating fluid temperature of 122-176°F (50-80°C). DO NOT maintain stall speed RPM for more than 5 seconds. Allow vehicle to idle in Neutral or Park for at least 5 minutes before performing next test.
- Object of test is to check overall performance of transaxle and engine by measuring maximum stall speeds in "D" and "R" ranges.
- Block front and rear wheels. Connect scan tool to DLC3, located under instrument panel. Apply parking and service brakes. Start engine. Position transmission in "D" range. Fully depress accelerator pedal. Immediately note highest engine RPM. DO NOT perform test longer than 5 seconds. Repeat test in "R" range. See STALL SPEED SPECIFICATIONS table.STALL SPEED SPECIFICATIONS
Applications RPM A-540E 2300-2750 A-540H 2250-2550 A-541E 1998-99 Avalon 2250-2550 Except 1998-99 Avalon 2450-2750 - If stall speed is same for both ranges, but lower than specified RPM, engine output may be insufficient or stator one-way clutch is not operating properly.NOTE: If stall speed RPM is more than 600 RPM below specified value, torque converter may be faulty.
- If stall speed in "D" range is higher than specifications, forward clutch may be slipping, No. 2 one-way clutch and OD one-way clutch are not operating properly, or line pressure is too low.
- If stall speed in "R" range is higher than specifications, direct clutch is slipping, 1st and reverse brake is slipping, OD direct clutch is slipping or line pressure is too low.
- If stall speed in "R" and "D" ranges is higher than specifications, line pressure is too low, fluid level is incorrect or OD one-way clutch is not operating properly.