Torque Converter Operation Test
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
- Carry out the Quick Test. See ON-BOARD DIAGNOSTICS WITH NGS . Refer to DIAGNOSTICS . Check for DTCs. Refer to the DIAGNOSTIC TROUBLE CODE CHARTS .
- Connect a tachometer to the engine.
- Bring the engine to normal operating temperature by driving the vehicle at highway speeds for approximately 15 minutes in (D) position.
- After normal operating temperature is reached, maintain a constant vehicle speed of about 80 km/h (50 mph) and tap brake pedal with the left foot.
- The engine rpm should increase when the brake pedal is tapped and decrease about 5 seconds after the pedal is released. If this does not occur, refer to Torque Converter Operation Concerns in DIAGNOSIS BY SYMPTOM .
- If the vehicle stalls in (D) or MANUAL 2 at idle with vehicle at a stop, move the transmission range selector lever to MANUAL 1 position. If the vehicle stalls, refer to DIAGNOSIS BY SYMPTOM . Repair as necessary. If the vehicle does not stall in (D), refer to DIAGNOSIS BY SYMPTOM .