I have decided to replace the pump again, flush the fluid and it still does not work. Then I did following tests: with the car running, in gear and with the foot on the brake, wait for the engine to drop to low idle and give the steering wheel a slight turn in any direction, the engine did not return to normal idle. Then I lift up the car and tried to move the wheels forward and backward and I noticed that moving the wheels backward is much harder to do, so per your expertise rack and pinion is the next thing I am going to replace. Thanks for all your help