rioredstang wrote:I don't think you have a pump issue. The pump is a pump, it supplies pressure. If steering is not hard all the time I think the pressure is OK. It sounds like something still binding. I would check upper strut mount plates. The bearing going bad will cause binding. I have seen the bearing lock up and the spring would jump on the strut housing when turning.
I've had this problem when i replaced my springs i tightened the nut on top of the bearing to hard and that cause the springs to jump but this is very noisy and cause lots of movement in the steering wheel so i dont think this is his problem.
I had the same problem as the op and my tie rods boots were TRASHED as well as the dust bellows on the rack. My rack and ps line were both leaking pretty bad.
Is the rough spot of the turn feel like theres no power steering or does it feel like weak power steering?
My ps would go completely out in my rough part of the turn. I had a new pump but that didnt change anything so i replaced my tierod ends with a new rack and new ps line and now it feels amaaazziinnnggggg so you might have to just go n drop the money but trust me its worth it.
Do note if your going to change your rack try n get a hicas rack it has a different ratio so it takes less turns of the steering wheel to turn your wheels more. And get some nice bushings( energysuspension work great n they're only $15)