2005 GT convertible with 142,000 on it. Had the original pump replaced (never had done it before) & the new ford pump does the same thing. Ford fluid used & flushed three times, no bubbles. Differential fluid was added & no change. was informed of an 1,000 breakin, 950 now & getting worse. Now the steering wheel has a slight tingling sensation to it as I deaccelerate & the noise gets louder. The bearing is the original. All pulleys, tensioner & serpentine belt all new. Been to 2 repair...

PS pump Whining / steering vibrations