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.

Warning:

Required tool kit F-33740-TL3 is no longer in production. Check with your distributor for availability.

CFT30

Oversized TCC Regulator Valve Kit
Part No. 33740-03K


You need this if... Find a Distributor

Ford CFT30 transmissions often exhibit TCC apply and release concerns, overheated fluid, poor cooler and lube flow, fuel economy drop, and/or TCC codes. These symptoms may be caused by excess wear of the TCC regulator valve bore, which allows crucial control pressure to escape the circuit. Reconditioning the bore and installing Sonnax oversized TCC regulator valve kit 33740-03K restores critical clearances for renewed TCC/cooler/lube operation.

  • Hardcoat anodized aluminum valve combats premature wear
  • Spring calibrated to restore OE function
  • Annular grooves help center valve in bore to reduce future side-load wear
  • Valve
  • Spring

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Ford CFT30 Valve Body Layout

Ford CFT30 Valve Body Layout
  • 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