Stall Speed Test (6-Speed A/T): Test

Engine - Warm Up

1. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.

Stall Speed - Test

1. Apply the parking brake, and block all four wheels.

2. Make sure the A/C switch is OFF.

3. Shift to D while pressing the brake pedal firmly, then press the accelerator pedal for 6 to 8 seconds, and note the engine speed.

NOTE:

Do not move the shift lever or remove your foot off the brake pedal, while raising the engine speed.

4. Allow 2 minutes for cooling, then repeat the test in the all shift lever positions.

Do not test stall speed for more than 10 seconds at a time.
Record the engine speed at 6 to 8 seconds after pressing the accelerator pedal. Higher engine speed will be indicated for 5 seconds.
Stall speed tests should be used for diagnostic purposes only.
The stall speed should be the same in the all shift lever positions.
Do not test stall speed with the A/T pressure gauge installed.

5. If any of the stall speeds are out of the service limit, refer to the problems and probable causes listed in the table.

Problem	Probable Causes
Stall speed rpm high in D and R	ATF pump output low Main regulator valve stuck Slipping clutch
Stall speed rpm high in R	Slippage of 4th clutch
Stall speed rpm low in D and R	Engine output low Engine throttle valve closed Torque converter one-way clutch slipping