Ranger 2WD V6-177 2.9L (1989)
Hydraulics with converter clutch unlocked, (1988-1990 Bronco II, 1988-1991 Aerostar And Ranger, 1990-1991 Mustang, And 1991 Explorer)
3. When the converter clutch shuttle valve is resting on the plug, line pressure is directed through the shuttle valve and to the torque converter in a
flow path that pushes the lockup piston off. When line pressure on the spring end of the converter clutch shuttle valve is exhausted, line pressure
on the plug end of the valve forces the valve to move and compress the spring. Governor pressure acting on the converter clutch shift valve has not
yet moved the valve to the upshifted position. Line pressure is therefore acting on the spring end of the converter clutch shuttle valve. The torque
converter is therefore unlocked.
