Stall Speed Test

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 the D and R ranges.

CAUTION:
a. Perform this 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 front and rear wheels.
b. Mount an engine tachometer.
c. Fully apply the parking brake.
d. Step down strongly on the brake pedal with your left foot.
e. Start the engine.
f. Shift into 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: 2,100 ± 150 rpm

g. Perform the same test in R range.

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

NOTE: If more than 600 rpm below the specified value, the torque converter could be at faulty.

b. If the stall speed in D range is higher than specified:
- Line pressure too low
- Forward clutch slipping
- No.2 one-way clutch not operating properly

c. If the stall speed in R range is higher than specified:
- Line pressure too low
- Direct clutch slipping
- First and reverse brake slipping

d. If the stall speed in R and D range is higher than specified:
- Line pressure too low
- Improper fluid level