Stall Test

Stall test
This test is performed to determine if there is slippage of friction elements or a malfunction of hydraulic components.

Notice:
a) Never unscrew radiator cap while engine is hot.
b) Wrap a thick cloth around cap when loosening.





1. Engage parking brake and put wheel chocks at front and rear of each wheel.
2. Warm engine thoroughly to raise ATF temperature to an operating level of 140 - 158°F (60 - 70°C).
3. Check, and correct as necessary, engine coolant, engine oil and ATF levels before testing.
4. Connect a tachometer to engine.

Procedure





1. Start engine.
2. Check idle speed in P range.
Idle speed: 750 - 850 rpm (with parking brake applied)
3. Shift selector lever to R range.

Caution: Perform steps 4 and 5 within five seconds to prevent possible transaxle damage.

4. Firmly depress foot brake with left foot and gradually depress accelerator pedal fully with right foot
5. When engine speed no longer increases, quickly read engine to speed and release accelerator.
6. Move selector lever to N range and allow engine to idle for at least one minute.

Caution:
a) Idling for at least one minute cools ATF and prevents its deterioration.
b) Allow sufficient cooling time between each stall test.

7. Perform stall tests for remaining ranges in same manner.
a. D range
b. 2 range
c. 1 range

Stall speeds: 2200 - 2500 rpm





Evaluation of stall test O/D OFF system