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Torque Converter Operations Test

WARNING: This page is about a different car, the 2006 Mercury Milan and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

This test verifies that the torque converter clutch control system and the torque converter are operating correctly.

  1. Carry out the Quick Test. Refer to ON-BOARD DIAGNOSTICS WITH SCAN TOOL . Check for DTCs. Refer to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS .
  2. Connect a tachometer to the engine.
  3. Bring the engine to normal operating temperature by driving the vehicle at highway speeds for approximately 15 minutes in D position.
  4. After normal operating temperature is reached, maintain a constant vehicle speed of about 80 km/h (50 mph) and tap the brake pedal with the left foot.
  5. The engine RPM should increase when brake pedal is tapped, and decrease about 5 seconds after pedal is released. If this does not occur, refer to TORQUE CONVERTER OPERATION CONCERNS .
  6. If the vehicle stalls in D at idle with vehicle at a stop, move the position selector lever to L position. If the vehicle stalls, refer to TORQUE CONVERTER OPERATION CONCERNS . Repair as necessary. If the vehicle does not stall in D position. Refer to DIAGNOSIS BY SYMPTOM .
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