TransGo SHIFT KIT® Valve Body Repair: A4CF1 & A4CF2 (2006-Up)

This TransGo SHIFT KIT® is engineered for 2006 and newer Hyundai and Kia vehicles featuring A4CF1 and A4CF2 transmissions. It effectively resolves common drivability issues such as 2-3 shift flare, direct clutch failure, erratic shift patterns, and delayed engagements. It also targets TCC shudder or slip, neutrals during shifts, and various solenoid or gear ratio diagnostic codes.

The A4CF series utilizes a reducing valve to regulate pressure for all solenoids, the damper clutch (lock-up) control valve, and pressure control valves A, B, and C. Functioning like an AFL or solenoid regulator valve, it ensures solenoid feed pressure remains at a calibrated PSI regardless of main line pressure. When this valve bore wears out, the solenoids cannot effectively regulate pressure, leading to shift quality complaints and erratic line pressure.

Furthermore, wear in the converter pressure regulator valve bore often prevents the computer from accurately controlling the lock-up clutch apply rate. This loss of control typically results in TCC-related codes, slipping, and shuddering during both the apply and release phases.

Features and Benefits

• Hydraulic Restoration: Includes an oversized, USA-made steel reducing valve to restore hydraulic circuit integrity. (Note: Installation requires reaming the bore with TransGo tool # A4A6-RV-TK).
• No-Tool Converter Repair: Features a drop-in torque converter regulator system that restores function to the existing worn bore without requiring specialized tooling.
• Consistent Regulation: Re-establishes proper pressure limits to protect solenoids and ensure accurate line pressure output.

Corrects, Prevents, and Reduces

• 2-3 flare and direct clutch failure
• Erratic shifting and neutrals during shifts
• TCC slip, shudder, and related trouble codes
• Delayed engagements
• Solenoid performance and gear ratio codes

Kit Includes

• Oversized hardened steel reducing valve (USA-made)
• Drop-in steel converter regulator bushing and hardened valve (USA-made)
• Converter limit regulator spring
• Steel converter regulator valve end plug

This kit requires TransGo tool A4A6-RV-TK

Transmissions: A4CF2 2006-UP, A4CF1 2006-UP

Vehicle

HYUNDAI
IX20, VERNA 2010-2016 4 SP FWD L4 1.6L
AVANTE HD/MD 2006-2012 4 SP FWD L4 1.6L 2.0L
ELANTRA 2008-2016 4 SP FWD L4 1.6L 1.8L
MOINCA 2009-2013 4 SP FWD L4 1.8L
SOLARIS 2011-2016 4 SP FWD L4 1.6L
ACCENT 2007-2016 4 SP FWD L4 1.4L 1.6L
AVEGA 2011-2014 4 SP FWD L4 1.6L
GETZ 2006-2009 4 SP FWD L4 1.4L
HB20 2012-2016 4 SP FWD L4 1.6L
I10 2013-2016 4 SP FWD L3 1.0L L4 1.2L
I20 2008-2014 4 SP FWD L4 1.4L 1.6L
KIA
CEE'D 2007-2011 4 SP FWD L4 1.6L 2.0L
CERATO 2006-2010 4 SP FWD L4 1.6L 2.0L
FORTE, SOUL 2008-2016 4 SP FWD L4 2.0L
SPECTRA/SPECTRA5 2006-2009 4 SP FWD L4 2.0L
CARENS 2009-2012 4 SP FWD L4 1.6L
K2, RIO 2011-2016 4 SP FWD L4 1.4L 1.6L
MORNING 2014-2016 4 SP FWD L4 1.2L
PRIDE 2010-2016 4 SP FWD L4 1.4L
QIANLIMA 2011-2012 4 SP FWD L4 1.4L 1.6L
VENGA 2009-2016 4 SP FWD L4 1.6L

Alternate Words: Automatic Transmission, Reprogramming, Improvement , Correction, Shift , Valve Body Rebuild Kit, SK A4CF