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Thread: 3.4L Power Steering Pump Whining Excessively
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Old 01-28-2022, 04:39 PM
FD7683 FD7683 is offline
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Join Date: Sep 2020
Location: Ohio
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FD7683 FD7683 is offline
Member
 
Join Date: Sep 2020
Location: Ohio
Posts: 507
FD7683 will become famous soon enough FD7683 will become famous soon enough
All fixed! Rebuilt the pump yesterday and discovered o-rings dry rotted and hard. Today I jacked up the front wheels and turned the steering wheel when it was turned off and running. Following the Toyota PSP bleed procedure and on the 2nd round, all air pockets are gone. Just now topped up the reservoir to hot line and the power steering on my truck never felt great in years!

HIGHLY recommend the Gates 348376 kit to rebuild the pump. Patience is key. I think the main cause of my problem was the reservoir screen being blocked of junk. 3 cans of brake cleaner got it clean enough.
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2000 4Runner Limited 4x4 V6
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