Symptoms:

  • High TCC apply pressure
  • TCC slip codes
  • Converter hub & stator damage
  • Brass contamination in oil pan

Cause:

The original converter regulator spring allows apply pressure to reach 180 psi in Drive, and allows release pressure to reach 225 psi in Reverse.

Correction:

Sonnax TCC regulator valve spring has less force, which reduces release pressure in Reverse, and regulates the apply pressure 150 psi in Drive.
  • 01M, 01N, 01P TCC Regulator Valve Spring 119940-19
  • 01M, 01N, 01P TCC Regulator Valve Spring 119940-19