Stall Test

The object of this test is to check the overall performance of the transmission and engine by measuring the maximum engine speeds in D and R ranges.

CAUTION:
a. Perform the test at normal operating fluid temperature (50 - 80 °C or 122 - 176 °F).
b. Do not continuously run this test longer than 5 seconds.

MEASURE STALL SPEED
a. Chock the four wheels.
b. Mount an engine tachometer.
c. Fully apply the parking brake.
d. Keep your left foot pressed firmly on the brake pedal.
e. Start the engine.
f. Shift into the D range. Step all the way down on the accelerator pedal with your right foot. Quickly read the highest engine rpm at this time.

Stall speed: 2,400 ± 200 rpm

g. Perform the same test in the R range.

EVALUATION
a. If the engine speed is the same for both ranges but lower than specified valve:
- Engine output may be insufficient.
- Stator one-way clutch is not operating properly.

b. If the stall speed at the D range is higher than specified:
- Line pressure too low.
- Forward clutch slipping.
- One-way clutch No.2 not operating properly.
- U/D one-way clutch not operating properly. (A240L, A241H)

c. If the stall speed at the R range is higher than specified:
- Line pressure too low.
- Direct clutch slipping.
- First and reverse brake slipping.
- U/D brake slipping. (A240L, A241H)

d. If the stall speed in the R and D ranges is higher than specified:
- Line pressure too low.
- Improper fluid level.
- U/D brake slipping. (A240L, A241H)