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Intermittent power steering on 4th gen 2009 4Runner

Discussion in 'General 4Runner Talk' started by Alex06, Dec 29, 2020.

  1. Dec 29, 2020 at 3:11 PM
    #1
    Alex06

    #1
    Alex06 [OP] New Member

    Joined:
    Dec 29, 2020
    Member:
    #18806
    Messages:
    1
    Gender:
    Male
    First Name:
    Alex
    Vehicle:
    2009 4Runner
    Hello,

    New member here looking to find root cause of an intermittent power steering loss- have not found anything definitive as of yet on other blogs / posts.

    This has been going on for several weeks. Yesterday, power steering ran fine- no problems. Today it was non existent.

    Did a full fluid flush (filled w/ ATF....old fluid was dark) a week ago after which steering was fine for about 50 miles till it went away again.

    Does not appear to be intermediate shaft ujoint as I would expect a constantly tight/ratchety steering.

    No pump noise, fluid levels have always been fine, no leaks, serpentine belt in good shape.

    I suspect a faulty valve (maybe pressure relief in the pump?) in the system, but could use some guidance before I start tearing apart and replacing parts. Trying to avoid a dealer visit as costs are up and quality is down....

    Any help / opinions are appreciated.

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    Alex06, Dec 29, 2020
    #1
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