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Ok I have been trying to determine if the problem is with the pump or the rack. The car is a new to me 96 850 Turbo with approx. 200k miles. Here is what I have done so far:
Flushed the fluid twice using Mobil 1 full syn - no measureable improvement.
With wheels off ground steering is light and smooth with or w/o car running so I believe the U-joint should be good.
Replaced both control arms in hopes that the ball joints were binding but no improvement - arms needed to be replaced anyway.
No visual leaks anywhere in the steering system.
The pump does not make the typical whining sound you would here if the fluid was low or if the pump was going south.
When turning with wheels on the ground very hard effort in both directions and significant amount of pulsation in the steering wheel and vibration at the pump.
Tried running the engine to around 2K rpms in park to see if the extra pump output would improve steering effort and it was very light and probably near normal although there was more noise and shudder from the pump. Not sure if I can conclude anything for sure other than the rack at least performed OK with the greater output of the pump at the higher rpm.
Does this seem to point more toward the pump and not the rack?
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