Stall Speed Test
CAUTION:
DO NOT
perform torque converter stall speed test for more than 5 seconds or transaxle may be damaged. If performing more than one torque converter stall speed test, place shift lever in Neutral position. Operate engine at 1000 RPM for at least 2 minutes to cool transaxle before performing next test.
- Apply parking brake. Block all wheels. Connect tachometer and start engine. Warm engine to normal operating temperature. Ensure transaxle fluid level is correct.
- Place shift lever in "D" position. Fully depress brake pedal. Fully depress accelerator for no more than 5 seconds and note maximum engine speed. This is the torque converter stall speed.
- Place shift lever in "N" position. Operate engine at 1000 RPM for at least 2 minutes to cool transaxle. Repeat test procedure with shift lever in "R" position.
- Ensure torque converter stall speed is 2500-2900 RPM. If torque converter stall speed is not within specification, refer to the TORQUE CONVERTER STALL SPEED TROUBLE SHOOTING table for possible causes.
- If torque converter stall speed exceeds specification, perform hydraulic pressure tests. See HYDRAULIC PRESSURE TEST under TESTING.
TORQUE CONVERTER STALL SPEED TROUBLE SHOOTING
| Torque Converter Stall Speed Test Results | Probable Cause |
|---|---|
| Stall Speed RPM High In "D" | Slipping Rear Clutch Or Overrunning Clutch |
| Stall Speed RPM High In "R" | Slipping Front Clutch Or Low-Reverse Brake |
| Stall Speed RPM Low In "D" & "R" | Engine Output Low Or Defective Torque Converter |