I have a '99 Taurus' that has the following symptoms:
The power steering pump is making a lot of noise.
The boost is less than it should be at idle, making the steering wheel harder to turn than it usually is.
Fluid has been "disappearing" from the system for several days now but there isn't a puddle under the car or leaks that I can find. Today, I topped it off while the car was running only to have it overflow the reservoir and make a huge mess when I shut the engine off.
The fluid in the reservoir is very foamy and frothy.
From reading some posts here, it appears that the rack might in fact be bad. Would a bad rack also cause the noisy pump operation? I noticed one of the tie rod boots was torn on the passenger's side, but there isn't ANY leakage of fluid from the rack; the only leakage appears to be coming from the overflow of the reservoir.
I don't want to replace the rack if it is in fact the pump that is bad.
Any suggestions?
Thanks!