Memory steer is a term used to describe a vehicle that continues to pull to the left or right after completing a turn in that same direction. A steering wheel is supposed to assist the driver and help return the wheel to center after a turn. This could be caused by an improperly installed front end part or a binding steering component.
Worn and binding bearings in the strut towers result in memory steer. It's also possible that the spring plate is worn. Always use care when compressing strut springs while replacing these parts.
Binding front end linkage also causes this problem. Check the tie rod ends, idler arm, and other linkages for binding. Be careful when installing these parts because some vehicles require the wheels to be straight on the final torque. If the wheel is turned, the tie rod acts as a spring returning it to the turned position. Binding ball joints cause memory steer.
Check all your pivot points in the front end. Worn front end parts and lack of lubrication can also cause this condition.
An unbalanced power steering rack can cause memory steer. Pressure may be bleeding off from one side, causing the vehicle to pull to the other. Also, look for a worn, overadjusted, or under adjusted sector shaft in the gearbox.