Pulls to the left

Dear Sir/Ms:

I have an oversteer problem. The vehicle when moving at 40 mph or above and the speed effects the severity of the response of the oversteer.

The vehicle wants to over turn to the left. This happens on the open road and when going around left hand turns at 4o mph or higher. I have replaced both from wheel bearings, both fron lower control arms, bothe front struts and aligned the escape more often then I can explain. The problem continues to remain.

I have just recently noticed that it only does it with power on, or another words during acceleration or maintaining current speed, not coasting. If I coast around the turn it does not happen. I can make it happen at lower speeds by turning the steering wheel to the left very quickly.

Do you have any ideas? Could it be I or more CV Joints?

Thank you,
Dave