Symptoms:

  • Shift concerns
  • Burnt clutches

Cause:

Continuous oscillation of the three pressure control valves causes valve body bore wear, resulting in diminished apply pressure to the clutches and brakes.

Correction:

The Sonnax pressure control valve has slightly longer critical spools and annular grooves added to provide better hydraulic sealing of the control and apply pressures when installed in a refurbished bore

A4CF1, A4CF2

Oversized Pressure Control Valve Kit
Part No. 84741-16K


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

Hyundai and Kia vehicles with an A4CF1, A4CF2 transmission may exhibit a multitude of drivability complaints and burnt clutches and/or brakes that can be caused by severe wear at the pressure control valves. These active valves are biased on both ends by modulated solenoid pressure to route line pressure to the apply components needed for different gears. As the bore wears, apply oil is allowed to exhaust, resulting in burnt clutches/brakes and shift complaints. The Sonnax oversized pressure control valve kit 84741-16K restores the critical hydraulic clearance between the valve and bore, and prevents future wear with highly wear-resistant materials, lengthened spools and annular grooves. An O-ringed end plug also is included to positively seal the pressure control solenoid feed pressure.

  • The valve and tool kit will work in any of the three OE pressure control valve locations
  • Highly wear-resistant valve has lengthened spools and annular grooves to prevent future wear
  • Kit includes an O-ringed end plug to positively seal the PCSV oil pressure
  • Valve
  • End Plug
  • 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, A4CF2 Valve Body Layout

Hyundai/Kia A4CF1, A4CF2 Valve Body Layout
  • A4CF1, A4CF2 Oversized Pressure Control Valve Kit 84741-16K
  • A4CF1, A4CF2 Oversized Pressure Control Valve Kit 84741-16K
  • A4CF1, A4CF2 Oversized Pressure Control Valve Kit 84741-16K
  • A4CF1, A4CF2 Oversized Pressure Control Valve Kit 84741-16K
  • A4CF1, A4CF2 Oversized Pressure Control Valve Kit 84741-16K

You need this if...

A vacuum test at the ports indicated fail to hold at least 18 in-Hg.

A4CF1, A4CF2 Oversized Pressure Control Valve Kit Vacuum Test Locations