Honda Acura NSX 1991 Service Manual page 471

Stall Speed
. Test
CAUTION:
l 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.
l
Be sure to remove the pressure gauge before testing stall speed.
l
1 . Engage the parking brake and block all four wheels.
2. Connect the tachometer, and start the engine.
3. After the engine has warmed up to normal operating temperature, shift into 2 position.
4. Fully depress the brake pedal and accelerator for 6 to 8 seconds, and note engine speed.
5 . Allow 2 minutes for cooling, then repeat same test in 1, 3, D and R position.
NOTE: Stall speed test must be made only for checking the cause of trouble.
Stall Speed RPM: Specification: 1,950-2,250 rpm
TROUBLE
Stall rpm high in 2 position
Stall rpm high in 1 position
Stall rpm high in 3 position
Stall rpm high in D position
Stall rpm high in R position
Stall rpm low in 2 position
PROBABLE CAUSE
Low fluid level or oil pump output
l
Clogged oil strainer
l
Pressure regulator valve stuck closed
l
Slippage of 2nd clutch
l
Slippage of 1st clutch or 1st hold clutch
l
Slippage of 3rd clutch
l
Slippage of 1 st clutch or 1 st gear one-way clutch
l
Slippage of 4th clutch
l
Engine output low
l
Torque converter one-way clutch slipping
l
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