Stall Speed: Test

CAUTION:

To prevent transmission damage, do not test stall speed for more than 10 seconds at a time.
Do not shift the lever while raising the engine speed.
Be sure to remove the pressure gauge before testing stall speed.

Engage the parking brake, and block the front wheels.
Connect a tachometer to the engine, and start the engine.
Make sure the A/C switch is OFF.
After the engine has warmed up to normal operating temperature (the radiator fan comes on), shift into [2] position.
Fully depress the brake pedal and accelerator for 6 to 8 seconds, and note engine speed.

Allow two minutes for cooling, then repeat the test in [D₄ ] and [R] positions.

NOTE:

Stall speed tests should be used for diagnostic purposes only.
Stall speed should be the same in [D₄ ], [2] and [R] positions.

Stall Speed RPM:

Specification: 2,700 rpm

Service Limit: 2,550-2,850 rpm

STALL SPEED CHART

TROUBLE	PROBABLE CAUSE
Stall rpm high in [D₄ ], [2] and [R] positions	Low fluid level or ATF pump output Clogged ATF strainer Pressure regulator valve stuck closed Slipping clutch
Stall rpm high in [R] position	Slippage of 4th clutch
Stall rpm high in [2] position	Slippage of 2nd clutch
Stall rpm high in [D₄ ] position	Slippage of 1st clutch or 1st gear one-way clutch
Stall rpm low in [D₄ ], [2] and [R] positions	Engine output low Torque converter one-way clutch slipping