Symptoms:

  • No lockup
  • Engine stall
  • TCC slip
  • Overheating
  • TCC codes
  • Loss of fuel economy
  • TCC apply & release concerns
  • TCC lining failure

Cause:

Bore wear at TCC switch valve allows critical fluid loss that prevents proper TCC operation.

Correction:

Eliminate bore wear and renew TCC action by reconditioning the bore and installing Sonnax oversized TCC switch valve kit.

45RFE, 545RFE, 65RFE, 66RFE, 68RFE

Oversized TCC Switch Valve Kit
Part No. 44912-08K


You need this if... View Instructions Find a Distributor

Vehicles with listed Chrysler transmissions often show up in the shop with TCC related troubles. These concerns may include trouble codes accompanied by TCC slip, no lockup, overheating and loss of fuel economy. In some cases, the TCC may be unable to release, resulting in improper lockup and engine stall.

Problems such as these are often caused by excess wear in the TCC switch valve bore, which allows vital control pressure to escape the circuit. Reconditioning the bore and installing Sonnax oversized TCC switch valve kit 44912-08K restores crucial clearances for renewed TCC control and operation.

  • Lengthened critical spool provides added stability and wear prevention
  • Hardcoat anodized aluminum valve combats premature 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.

Chrysler 45RFE, 545RFE, 65RFE, 66RFE, 68RFE Valve Body Layout

Chrysler 45RFE, 545RFE, 65RFE, 66RFE, 68RFE Valve Body Layout
  • 45RFE, 545RFE, 65RFE, 66RFE, 68RFE Oversized TCC Switch Valve Kit 44912-08K
  • 45RFE, 545RFE, 65RFE, 66RFE, 68RFE Oversized TCC Switch Valve Kit 44912-08K

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. To test balance port, valve must be moved and held about .060" to .100" against spring pressure. Inserting a retainer clip from a neighboring valve train into the balance port works well for this purpose.

45RFE, 545RFE, 65RFE, 66RFE, 68RFE Oversized TCC Switch Valve Kit Vacuum Test Locations