-
-
Apply the parking brake, and block all four wheels.
-
-
Make sure the A/C switch OFF.
-
After the engine has warmed up to normal operating temperature (the radiator fan comes on), shift to D.
-
Firmly press and hold the brake pedal then, while still holding the brake pedal, press the accelerator pedal for six to eight seconds, and note maximum engine speed. Do not move the shift lever while raising engine speed.
-
Allow 2 minutes for cooling, repeat the test for the seven-position transmission in 2, and allow 2 minutes, then repeat test in 1.
-
Allow 2 minutes for cooling, then repeat the test in R.
NOTE:
-
Do not test stall speed for more than 10 seconds at a time.
-
Stall speed tests should be used for diagnostic purposes only.
-
The stall speed should be the same in D, 2, 1, and R.
-
Do not test stall speed with the A/T pressure gauges installed.
Stall Speed rpm
|
Specification:
|
2,200 rpm (min
−1
)
|
Service Limit:
|
2,050−2,350 rpm (min
−1
)
|
-
If any of the stall speeds are out of the service limit, refer to the problems and probable causes listed in the table.
Seven-position Transmission
Problem
|
Probable Causes
|
Stall speed rpm high in D, 2, 1, and R
|
-
ATF pump output low
-
Clogged ATF strainer
-
Regulator valve stuck
-
Slipping clutch
|
Stall speed rpm high in 2
|
Slippage of 2nd clutch
|
Stall speed rpm high in 1
|
Slippage of 1st clutch
|
Stall speed rpm high in R
|
Slippage of 5th clutch
|
Stall speed rpm low in D, 2, 1, and R
|
|
Five-position Transmission
Problem
|
Probable Causes
|
Stall speed rpm high in D and R
|
-
ATF pump output low
-
Clogged ATF strainer
-
Regulator valve stuck
-
Slipping clutch
|
Stall speed rpm high in R
|
Slippage of 5th clutch
|
Stall speed rpm low in D and R
|
|
|
|