Stall Speed Test
- Apply the parking brake, and block all four wheels.
- Connect the HDS to the DLC (A), and go to the "A/T data list".
- Make sure the A/C switch OFF.
- After the engine has warmed up to normal operating temperature (the radiator fan comes on), shift to the 2 position.
- Firmly press the brake pedal, then fully press the accelerator pedal for 6 to 8 seconds, and note engine speed. Do not move the shift lever while raising engine speed.
- Allow 2 minutes for cooling, then repeat the test in D, 1, and R.NOTE:
- Do not test stall speed for more than 10 seconds at a time.
- Stall speed tests should be used for diagnostic purposes only.
- Stall speed tests should be the same in D, 2, 1, and R.
- Do not test stall speed with the A/T pressure gauges installed.
Stall Speed RPM
Specification: 1,950 RPM
Service Limit: 1,800-2,100 RPM
- If any of the stall speeds are out of the service limit, problems and probable causes are listed in the table.PROBLEM SYMPTOM CHART
Problem Probable causes Stall speed rpm high in D, 2, 1, and R - Low fluid level
- ATF pump output low
- Clogged ATF strainer
- Regulator valve stuck
- Slipping clutch
Stall speed rpm high in 1 - Slippage of 1st clutch
- Slippage of 1st gear one-way clutch
Stall speed rpm high in 2 Slippage of 2nd clutch Stall speed rpm high in R Slippage of 5th clutch Stall speed rpm low in D, 2, 1, and R - Engine output low
- Engine throttle valve closed
- Torque converter one-way clutch slipping