Symptoms:

  • Converter shudder & TCC slip
  • TCC codes
  • No lockup
  • Overheated fluid & TCC lining
  • TCC apply & release concerns
  • Poor converter & cooler oil flow
  • Lube failures
  • Loss of fuel economy

Cause:

Bore wear at the TCC regulator valve allows pressure loss that leads to TCC and cooler/lube concerns.

Correction:

Recover hydraulic control and renew TCC performance by reconditioning the bore and installing Sonnax oversized TCC regulator valve kit.
  • CFT30 Oversized TCC Regulator Valve Kit 33740-03K
  • CFT30 Oversized TCC Regulator Valve Kit 33740-03K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

CFT30 Oversized TCC Regulator Valve Kit Vacuum Test Locations