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Home >> Acura >> 1999 >> 3.2TL >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis >> Pressure Tests

Pressure Tests

Special Tools Required 

  1. Before testing, be sure the transmission fluid is filled to the proper level.
  2. Raise the front of the vehicle, and make sure it is securely supported.
  3. Set the parking brake, and block rear wheels securely.
  4. Allow the front wheels to rotate freely.
  5. Warm up the engine (the radiator fan comes on), then stop it and connect a tachometer.
  6. Connect the oil pressure gauges to each inspection hole securely, and do not allow dust or other foreign particles to enter the holes.

    TORQUE: 18 N.m (1.8 kgf.m, 13 Ft. Lbs.)

    Fig 1: Locating Pressure Ports
    G01159873
  7. Start the engine, and run it at 2,000 RPM in the [ ] or [ ] position.
  8. Measure line pressure at line pressure inspection hole (A) in the [ ] or [ ] position.
    NOTE: Higher pressure may be indicated if measurements are made in shift lever positions other than [N] or [P].
  9. Shift to the [ ] position, and measure 1st clutch pressure at the 1st clutch pressure inspection hole (B).
  10. Shift to the [ ] position, and measure 2nd clutch pressure at the 2nd clutch pressure inspection hole (C).
  11. Shift to the [ ] position, then press the brake pedal and hold it.
  12. Shift to the [4 ] position, and release the brake pedal (the transmission should be in 1st gear).
  13. Accelerate the engine to 2,500 RPM (the transmission will shift to 2nd gear).
  14. Release the accelerator for more than 5 seconds after the transmission shifts to 2nd gear (the engine will come down to about 1,000 RPM).
  15. Press the accelerator very slowly to increase engine speed to 2,000 RPM gradually over 5 seconds, then hold it at 2,000 RPM.
  16. Measure 3rd and 4th clutch pressure at the 3rd clutch pressure inspection hole (D), and the 4th clutch pressure inspection hole (E), (the transmission will shift from 2nd gear to 3rd gear, and then to 4th gear).
  17. Shift to the [ ] position, and measure 4th clutch pressure at the 4th clutch pressure inspection hole.
    Fig 2: Identifying Pressure Test Chart
    G01159874
  18. Reinstall the sealing bolts with new sealing washers, and tighten the bolts to the specified torque.

    TORQUE: 18 N.m (1.8 kgf.m, 13 Ft. Lbs.)

    NOTE: Do not reuse the old sealing washers.