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Home >> Jeep >> 1992 >> Comanche Base, 2.5 P, RWD, AX4 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Overhaul - Aw-4 >> Testing >> Torque Converter Stall Speed Test >> Torque Converter Stall Speed Test Procedure

Torque Converter Stall Speed Test Procedure

  1. Ensure transmission fluid level is correct and transmission is at normal operating temperature.
  2. Install tachometer. Apply parking brake and block wheels. Apply and hold service brake.
  3. On Comanche and Cherokee 4WD models, shift transfer case into 2H (2WD high position). On Grand Cherokee models with NP249 transfer case, shift transfer case into 4H (4WD high position) and with all other transfer cases, shift transfer case into 2H (2WD high position).
  4. On all models, start engine. Shift transmission into "D" (Drive). Fully depress throttle to wide open throttle and note maximum engine RPM (torque converter stall speed). Torque converter stall speed should be 2100-2400 RPM in "D" (Drive).
    CAUTION: DO NOT  maintain wide open throttle for more than 4 seconds.
  5. Release throttle and shift transmission into Neutral. Allow transmission fluid to cool for 15-20 seconds.
  6. Shift transmission into Reverse. Fully depress throttle to wide open throttle and note maximum engine RPM (torque converter stall speed). Torque converter stall speed should be 2100-2400 RPM in Reverse.
NOTE: Use the following symptoms for trouble shooting results of torque converter stall speed tests.
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