Sonnax remanufactured valve body F025 has been designed to address common issues such as:
Harsh/forced 4-3 downshifts
Delayed forward
Harsh 1-2 shift
Wrong gear starts
Intermittent neutral during Drive
Line pressure instability
No 4th Gear
3rd Gear slips
TCC apply and release concerns
Solenoid performance and/or TCC codes
A new OE EPC solenoid is put on every valve body to help ensure line pressure stability. The remanufactured valve body is tested on state-of-the are equipment, with special attention paid to the pressure regulator valve to ensure smooth and proper action that will provide appropriate line pressure curves during the various shift events. The simulated drive test also ensures that all clutch pressures, torque converter pressure and shift timing match OE performance. A remanufactured and fully hydraulically and electrically tested secondary valve body is also included.