Pressure Regulator & Boost Valve Kit A4LD High Ratio
BOOST VALVE KIT (A4LD) HIGH RATIO
O-Ring style, large ratio
Symptoms:
Delayed Reverse
Soft upshifts
Low line pressure in Forward
Low line pressure in Reverse
Poor modulator control
Cause:
Worn boost sleeve allows reverse and/or TV pressure to cross leak or exhaust.
Correction:
Sonnax replacement boost valve kit restores hydraulic integrity to the bore.
Typical problems in vehicles with a Ford A4LD transmission include low line pressure in forward or reverse, soft upshifts, delayed reverse and poor modulator control. These complaints can often be caused by a worn boost sleeve, which allows reverse and/or TV pressure to cross leak or exhaust. Sonnax high ratio boost valve kit with O-rings replaces worn parts and offers higher line rise than the OE-style, low-ratio valve.
High-ratio valve with O-rings offers higher line rise than the OE valve
O-Ring style, large ratio
Symptoms:
Cause: Worn boost sleeve allows reverse and/or TV pressure to cross leak or exhaust.
Correction: Sonnax replacement boost valve kit restores hydraulic integrity to the bore.
Typical problems in vehicles with a Ford A4LD transmission include low line pressure in forward or reverse, soft upshifts, delayed reverse and poor modulator control. These complaints can often be caused by a worn boost sleeve, which allows reverse and/or TV pressure to cross leak or exhaust. Sonnax high ratio boost valve kit with O-rings replaces worn parts and offers higher line rise than the OE-style, low-ratio valve.
Contents:
SONNAX Installation Instructions