Torque Converter Stall Speed Test
CAUTION:
DO NOT perform torque converter stall speed test for greater than 10 seconds or transaxle may be damaged. DO NOT move shift lever while increasing engine speed.
- Apply parking brake and block all wheels. Connect tachometer and start engine. Ensure A/C is off. Warm engine to normal operating temperature. Place shift lever in "2" position.
- Fully depress brake pedal. Fully depress accelerator for 6-8 seconds and note engine speed. This is torque converter stall speed.
- Allow transaxle to cool for 2 minutes. Repeat test procedure in "D4", "1" and "R" positions.
- Torque converter stall speed should be the same in "D4", "2", "1" and "R" positions. Torque converter stall speed should be 1850-2150 RPM. If torque converter stall speed is not within specification, see TORQUE CONVERTER STALL SPEED TROUBLE SHOOTING table for possible causes.
TORQUE CONVERTER STALL SPEED TROUBLE SHOOTING
| Stall Speed Test Results | Probable Cause |
|---|---|
| RPM High in "D4", "2", "1" & "R" | Low Fluid Level, Low Oil Pump Output, Clogged Fluid Strainer, Pressure Regulator Valve Stuck Closed, Slipping Clutch |
| RPM High In "R" | Slipping Reverse Clutch |
| RPM High In "D4" | Slipping 1st Or 2nd Clutch, Defective 1st Gear Or 2nd Gear One-Way Clutch |
| RPM High In "2" | Slipping 1st-Hold Or 2nd Clutch, Defective 2nd Gear One-Way Clutch |
| RPM High In "1" | Slipping 1st Or 1st-Hold Clutch, Defective 1st Gear One-Way Clutch |
| RPM Low In "D4", "2", "1" & "R" | Engine Output Low, Torque Converter One-Way Clutch Slipping |