Engagement Quality
A faulty clutch solenoid or its return spring may cause
low apply pressure. The valve controlled by the solenoid
is normally held in position by a coil-type return spring.
If the spring loses tension, the clutch will engage too soon.
Because there is insufficient pressure to hold the clutch,
shudder occurs as the clutch begins to grab and then slip.
K the solenoid valve and/or return spring are faulty, they
should be replaced, as should the torque converter.