Stall Speed Test
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Perform test at normal operating fluid temperature of 122-176°F (50-80°C). DO NOT continue test for more than 5 seconds.
- Testing is done to check overall performance of transaxle and engine by measuring maximum engine speeds in "D" and "R" positions.
- Block front and rear wheels. Connect scan tool to Data Link Connector (DLC) to monitor engine RPM. Apply parking and service brakes. Start engine. Place selector lever in "D" position. Fully depress accelerator pedal. Release pedal after 5 seconds.
- Record highest engine RPM. Repeat test in "R" position. Compare reading obtained to specification. See STALL SPEED SPECIFICATIONS table.
- If stall speed is same for both positions, but less 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 less than specification, torque converter may be faulty.
- If stall speed in "D" position is higher than specifications, forward clutch may be slipping, No. 2 one-way clutch may not be operating properly, underdrive clutch may be slipping, or line pressure is too low.
- If stall speed in "R" position is higher than specifications, direct clutch may be slipping, 1st/reverse brake may be slipping, line pressure is too low or underdrive clutch may be slipping.
- If stall speed in "R" and "D" positions is higher than specifications, line pressure is too low, incorrect fluid level exists or No. 2 one-way clutch is not operating properly.
STALL SPEED SPECIFICATIONS
| Application | Specification (RPM) |
|---|---|
| ES 300 | 2450-2750 |