I have a 1993 Thunderbird with the 3.8L V6 engine, no supercharger, and the power steering has the variable-assist set-up on it. I have replaced the power steering pump with the reservoir 3 times already, replaced the rack-and-pinion, and replaced the variable-assist actuator and I am still dealing with the power steering whining and groaning! ARGHHHHHHH! When the car is at operating temperature and idling, there is no whine from the power steering. At speeds under 10 miles per hour (like coasting through a parking lot) there is also no whine from the power steering. The second I step on the accelerator, the whine kicks up. At cruising speeds on the highway, the whine is still there, too. At slow speeds turning in my housing area, the whine kicks up also. I have tried a couple of remedies (Lucas Oil Power Steering treatment to name one) trying to get rid of this noise, but so far I have had no luck whatsoever. I am wondering if anyone as any advice on how to get rid of this noise. The car runs great, otherwise, I just can't seem to get rid of this noise and it's driving me nuts right now.