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Home >> Geo >> 1991 >> Prizm Base, 4D Hatchback, Standard >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Overhaul - A-240E/L, A-244L & A-245E >> Performance Tests >> Line Pressure Specifications Tables >> Governor Pressure Test

Governor Pressure Test

  1. Transaxle must be at normal operating temperature of 122-176°F (50-80°C). Block rear wheels. DO NOT  apply parking brake. Raise and support front of vehicle with safety stands.
  2. Remove appropriate transaxle plug and connect pressure gauge. See Figure. Start engine and shift vehicle into "D" position. Note governor pressure at specified speeds and engine RPM. See GOVERNOR PRESSURE SPECIFICATIONS . Readings at 490 and 800 RPM can be taken with vehicle on safety stands.
    CAUTION: Road test vehicle or use chassis dynamometer to check governor pressures at vehicle speeds above 800 RPM.
  3. Incorrect governor pressure may be caused by incorrect line pressure, leakage at governor pressure circuit or defective governor valve.
GOVERNOR PRESSURE SPECIFICATIONS (1)

Engine RPM Speed (MPH) psi (kg/cm2 )
A-240L
800 17 7.1-18 (.5-1.3)
1600 35 26-37 (1.8-2.6)
2400 53 47-58 (3.3-4.1)
A-241L
1300 29 26-30 (1.8-2.1)
2600 58 60-71 (4.2-5.0)
A-243L
490 11 3-7 (.2-.5)
1300 29 26-30 (1.8-2.1)
2600 58 60-71 (4.2-5.0)
(1) On A-240E, A-241E and A-244E transaxles, governor is replaced by speed sensor.