Stall Speed Test

STALL TEST
The object of this test is to check the overall performance of the transaxle and engine by measuring the stall speeds in the "D" and "R" positions.
NOTICE:
^ Perform the test at normal operating fluid temperature 50 - 60°C (122 - 140 °F).
^ Do not continuously run this test longer than 5 seconds.
^ To ensure safety, conduct this test in a wide. clear, level area which provides good traction.
^ The stall test should always be carried out in pairs. One technician should observe the conditions of the wheels or wheel stoppers outside the vehicle while the other is performing the test.

MEASURE STALL SPEED

Stall Speed Testing:

(a) Chock the 4 wheels.
(b) Connect a tachometer to the engine.
(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 position. Fully depress the accelerator pedal with your right foot, then quickly read the stall speed.
Stall speed: 2,450 ± 150 rpm
(g) Perform the same test in R position.
Stall speed: 2,450 ± 150 rpm

EVALUATION
Problem: Stall speed high in D and R position
Possible cause:
^ Line pressure too low
^ Improper fluid level
^ O/D one-way clutch not operating properly
Problem: Stall speed low in D and R positions
Possible cause:
^ Engine output may be insufficient.
^ Stator one-way clutch is operating properly.
^ If more than 600 rpm below the specified value, the torque converter clutch could be faulty.
Problem: Stall speed high in D position
Possible cause:
^ Line pressure too low
^ Forward clutch slipping
^ No.2 one-way clutch not operating properly
^ O/D one-way clutch not operating properly
Problem: Stall speed high in R position
Possible cause:
^ Line pressure too low
^ Direct clutch slipping
^ First and reverse brake slipping
^ O/D clutch slipping