Accessories

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

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 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

Kit Contains:

• Valve
• End Plug
• O-Rings (2) 1 extra

SONNAX Installation Instructions