I have a 2005 F150 4 X 4 (150,000 miles). Recently noted that low speed steering was difficult, then, easy again (intermitant tight spots). Pump is not making any noise, topped off fluid (1st time since new) although it was just below the "min" line. Pulled front wheels off and everthing seemed to be free underneath. Turned steering wheel right and left with tires off and pretty much had the same symptons, although the problem is more noticeable with wheels and on the ground.
I had planned on replacing the pump however my experience told me that normally defective pumps make alot of noise?
i had the same problem. i added a power steering cooler(had one laying around) drained all the fluid.added 1 bottle or bars reconditioner its in one bottle half red and half yelloe fluid. then filld the rest of the way up with regular fluid.after 2 weeks maybe less problem gone but mine still whines but no more hard steering
The shaft that the pulley connects to once broke on my chevy. Everything appeared to be working except I had no power steering. Once I took the belt off, I was able to pull the pulley and shaft right out.
-something to check
At the very least (and cheapest), disconnect the lower pump hose to cooler (all 2004 to 2008's have power steering coolers), and drain. Fill with fresh fluid and perhaps some conditioner (I have no experience with any recommended Power steering conditioners). See if the problem clears. If not, I'd say you have a pump or rack issue.
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