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Old 11-14-2005, 11:01 PM   #1 (permalink)
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Power steering pump puking fluid.

ok, awhile back I did an axle swap w/ x-over. the 1st night it got into the 30's-upper20's driving down the road and the power steering pump was whining. checked it and it was full. hmm, odd. anyway I kept driving it and a few miles later the whine had gotten louder and the power steering fluid was all over my inner fenderwell and down the underside of my truck.

the next morning I add some fluid start the truck and let it get hot then try turning and it's fine. no whine. take it for a drive down the road and after the first sharp turn it's armstrong steering then a couple minutes later the thing starts to whine and it pukes all the fluid up through the top of the pump again!

is there a bypass in the box or just in the pump? and any idea on WTF is the actual cause? reman'd box/pump/lines is a couple hundred that I can't afford right now. btw, it's an '85 chevy.
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Last edited by k10caddy; 11-14-2005 at 11:03 PM.
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Old 11-15-2005, 02:00 AM   #2 (permalink)
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did you overfill it? or do you have the lines reversed? i forget if thats possible pull the power steering lines off check if there kinked in a place or clogged.
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Old 11-15-2005, 08:41 AM   #3 (permalink)
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I did the swap back in august and had been driving around since then. so if it was overfilled or had the lines reversed it should've acted up before now, right? will the lines just randomly clog or
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Old 11-15-2005, 03:15 PM   #4 (permalink)
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Try a $10 junk yard pump and see if it still does this. If that's the problem then replace the pump when you get some coin. The only time mine pukes is when I top it right up.
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Old 11-15-2005, 03:39 PM   #5 (permalink)
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try bleeding the system
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Old 11-24-2005, 12:35 AM   #6 (permalink)
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I'm going to pull a pump off a '71 caddy and hopefully that pump is good. gotta keep the old keyed 2-groove pulley.
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Old 11-25-2005, 12:03 AM   #7 (permalink)
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Check and see if you have a small pin hole in the return line.
I had this happen to me. as you drive it, it starts to suck air into the system and then pukes out when it foams up from the air being whipped up in the pump.
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Old 11-25-2005, 01:38 PM   #8 (permalink)
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well, I put the other pump on and had a hydraulic hose made up and replaced the return line. so it's now back 1-finger steering. thanks for the replies.
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