Ranger 2WD V6-245 4.0L (1990)
Hydraulics With Converter Clutch Locked, (1988 Thunderbird And 1988-1989 Mustang)
Hydraulics With Converter Clutch Locked. (1988-1990 Bronco II, 1988-1991 Aerostar And Ranger, 1990-1991 Mustang, And 1991 Explorer)
4. As vehicle speed increases, governor pressure increases and the converter clutch shift valve moves to the upshifted position. Oil on the spring end
of the converter clutch shuttle valve now drains to exhaust at the converter clutch shift valve. Line pressure is now directed through the shuttle
valve to the converter in a flow path that pushes the piston on.