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Diagnosing Honda Torque Converter Shudder

All Automatic Transmissions

Symptom: Feels like there is a slight vibration under light acceleration, right before the transmission shifts.

Verification: In your scan tool, use the Live Data function and select the following parameters to graph.

  • Engine Speed
  • Input Shaft (Mainshaft) Speed

  • Output Shaft (Countershaft) Speed

  • Throttle Position sensor 1

  • Shift Control


Start your Flight recording function, and then drive under light steady acceleration conditions.

Solution: The first step to fixing is to drain and refill Automatic Transmission Fluid with factory Honda ATF twice! After the first drain and refill drive and then repeat. If the issue persists or returns, replace the torque converter from Honda.