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Unread 04-06-2011   #1 (permalink)
THOR74 is offline Apprentice


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Question Power steering whine - how to quiet

G'day gents!

I recently replaced my old power steering pump and all three hoses with a remanufactured pump and new hoses (the old pump was leaking).

My old pump was original equipment and ran quietly. The new pump is quite noisy, to the point when I'm driving straight and going through the gears with the windows up I can hear the pump whining.

I remember seeing on here some solutions to this problem whereby something was added to the fluid and it quieted things down.

My searches here only turned up a couple of people suggesting the use of rear end friction modifier in the steering fluid.

The job was properly done, and I'm using type-F fluid (as always). I've run my pump out of fluid years ago and then it really started whining - I have enough fluid in it now.

Can anyone shed some light on this situation for me? A safe additive to kill some of the noise?
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Orig-mint-stock 1991 Ford Mustang Cobra GT (Canadian Ed.): 85,000 miles with all available fact options (but leather), featuring: T5O-D with synch reverse, cruise, a/c, power mirrors/windows/locks/hatch/lumbar seats, DRLs, int wipe, lockable glove box, illum visors, sunroof, block heater, 230 kph speedo and 2.73 TractionLok diff. Only "mods" are a muffler delete and K&N air filter. A second owner since 1998 and still totally in love. "They're gonna bury me in this car."
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Unread 04-06-2011   #2 (permalink)
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FWIW: I heard more than 1 person say they used Lucas Oil to stop the whine in there power steering.
Lucas Oil | Hi-Performance Lucas Oil Products Inc.
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Unread 04-07-2011   #3 (permalink)
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thanks - anyone else have anything to say here?
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Orig-mint-stock 1991 Ford Mustang Cobra GT (Canadian Ed.): 85,000 miles with all available fact options (but leather), featuring: T5O-D with synch reverse, cruise, a/c, power mirrors/windows/locks/hatch/lumbar seats, DRLs, int wipe, lockable glove box, illum visors, sunroof, block heater, 230 kph speedo and 2.73 TractionLok diff. Only "mods" are a muffler delete and K&N air filter. A second owner since 1998 and still totally in love. "They're gonna bury me in this car."
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Unread 04-08-2011   #4 (permalink)
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I used Type F Automatic Transmission Fluid in mine and no noise what so ever....
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