Symptoms:

  • TCC codes
  • Overheating
  • TCC apply & release concerns
  • Cycling TCC RPM

Cause:

Wear at the damper clutch control valve bore allows solenoid modulator pressure leakage, preventing the valve from staying in the applied position.

Correction:

Recondition the bore and install Sonnax oversized damper clutch control valve kit to restore hydraulic integrity and prevent future wear.

Warning:

Required tool kit F-84741-TL13 is no longer in production. Check with your distributor for availability.

A4CF1, A4CF2

Oversized Damper Clutch Control Valve Kit
Part No. 84741-13K


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

The damper clutch control valve in Hyundai/Kia A4CF1, A4CF2 transmissions controls fluid pressure to the apply and release side of the converter clutch as well as to the cooler and lube circuits based upon the valve position. Solenoid modulator pressure works on the outboard valve spool diameter to stroke the valve into the converter apply position, and PCS signal pressure, combined with spring force at the inboard valve spool, work to stroke the valve into the converter release position. Wear at either of these critical valve-to-bore (casting or sleeve) locations will prevent proper functioning of the converter. Sonnax oversized damper clutch control valve kit 84741-13K restores the proper hydraulic clearance necessary to allow these pressures to work appropriately when used in a reconditioned bore.

  • Valve is paired with a modified sleeve, incorporating an O-ring which provides positive sealing of solenoid modulator feed pressure
  • Valve has lengthened spools for stability and sealing engagement in bores
  • Annular grooves help center valve in bore to reduce future side-load wear
  • Valve
  • Sleeve
  • O-Rings (2) 1 Extra

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.

Hyundai/Kia A4CF1/2 Valve Body Layout

Hyundai/Kia A4CF1/2 Valve Body Layout
  • A4CF1, A4CF2 Oversized Damper Clutch Control Valve Kit 84741-13K
  • A4CF1, A4CF2 Oversized Damper Clutch Control Valve Kit 84741-13K

You need this if...

A4CF1, A4CF2 Oversized Damper Clutch Control Valve Kit Vacuum Test Locations