Mine went out a little while back and I tried the rebuilt one from autozone. actually i tried two from auto zone, two from advance auto parts, and two from napa. and each one of those whined louder and put out less pressure than the one I took off with 135,000 miles. I say it put out less pressure because it was conciderably harder to turn the steering wheel. I left each one on for a couple of days to see if anymore air would get out of the lines and it never got any better. i finally had to go to a ford dealer and pay three times as much but it works great now

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2000 ranger 2wd 3.5" Fabtech lift, 31"x10.5" BFG all terrains, leather bucket seats, poweraid TBS, k&n, flowmaster, 2.5L... but soon to be 302