1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

New power-steering pump is haunted!

Discussion in '1st Gen. Tacomas (1995-2004)' started by ewitwins, Apr 1, 2017.

  1. Apr 1, 2017 at 2:58 PM
    #1
    ewitwins

    ewitwins [OP] Member

    Joined:
    Mar 24, 2017
    Member:
    #214302
    Messages:
    7
    Gender:
    Male


    Anyone know a good exorcist?

    In all seriousness, the mechanic didn't know what this is, and I'm not entirely sure myself. After getting him to diagnose and replace the pump (after my attempts and failures to solve the problem myself), it's still producing this unholy whining/moaning noise at the pump whenever I turn the wheel.

    When I'm moving at speed, it isn't nearly as bad as when I'm sitting, turning the wheel from lock to lock. The fluid isn't foaming (although I am getting the occasional large bubbles), so I don't think there's air (or a lot of air) trapped in the system. He said that if it's still making the noise by Monday, we'll try something else.

    Any ideas?
     
  2. Apr 1, 2017 at 4:53 PM
    #2
    tan4x4

    tan4x4 Well-Known Member

    Joined:
    Nov 30, 2011
    Member:
    #67982
    Messages:
    3,791
    Gender:
    Male
    First Name:
    Rick
    Folsom, CA
    Vehicle:
    99 Tacoma EC 4x4 2.7L Auto
    Bilsteins, OME 881's, 3-leaf AAL, Detroit TruTrac, Tundra brake swap, Michelin LTX AT2, Tranny skidplate, TC skidplate, CBI rear bumper, TG sliders, UltraGauge, PowerTank, Reverse Camera, CB
    Was the reservoir replaced as well?
    If not, that could be the issue (clogged filter).
     
  3. Apr 1, 2017 at 6:27 PM
    #3
    ewitwins

    ewitwins [OP] Member

    Joined:
    Mar 24, 2017
    Member:
    #214302
    Messages:
    7
    Gender:
    Male
    I cleaned the screen out by pulling the reservoir off and blasting it with brake-cleaning fluid while I was rebuilding the old pump, so it's been clean for awhile now.

    Unfortunately, that means I'm not sure what the hell is causing the noise.
     
  4. Apr 1, 2017 at 6:34 PM
    #4
    FirstTimeFirstGen

    FirstTimeFirstGen In Case You Didn't Know, I Have Some Skids

    Joined:
    Jan 9, 2017
    Member:
    #207059
    Messages:
    3,128
    Gender:
    Male
    First Name:
    David
    Sacramento
    Vehicle:
    2004 4WD 3.4L Tacoma (Manual)
    Not enough to have a build thread.
    I'm convinced there's air trapped in it or you have a blockage somewhere else. Jack up your front wheels, turn the engine on, and steer lock to lock 10 times, holding it at lock for 2-3 seconds each time. If that doesn't work - bad pump or blockage somewhere else....
     
  5. Apr 1, 2017 at 10:09 PM
    #5
    tan4x4

    tan4x4 Well-Known Member

    Joined:
    Nov 30, 2011
    Member:
    #67982
    Messages:
    3,791
    Gender:
    Male
    First Name:
    Rick
    Folsom, CA
    Vehicle:
    99 Tacoma EC 4x4 2.7L Auto
    Bilsteins, OME 881's, 3-leaf AAL, Detroit TruTrac, Tundra brake swap, Michelin LTX AT2, Tranny skidplate, TC skidplate, CBI rear bumper, TG sliders, UltraGauge, PowerTank, Reverse Camera, CB
    Dumb question, but I assume you are using the correct fluid for Toyota PS pumps, Dexron II ATF.
     
    FirstTimeFirstGen likes this.
  6. Apr 1, 2017 at 10:11 PM
    #6
    anthony250f

    anthony250f Well-Known Member

    Joined:
    Feb 18, 2012
    Member:
    #73066
    Messages:
    15,555
    Gender:
    Male
    First Name:
    Anthony
    San Diego, CA
    Vehicle:
    2008 dcsb trd offroad 4wd
    Was the pump oem?? I tried like 3 after markets and never worked...put a used oem in and it was silent
     
  7. Apr 2, 2017 at 3:06 AM
    #7
    Wyoming09

    Wyoming09 Well-Known Member

    Joined:
    Apr 24, 2015
    Member:
    #153833
    Messages:
    6,542
    Gender:
    Male
    New Tripoli Pa
    Vehicle:
    2000 Work truck
    Super Springs
    So many general Mechanics don`t even look just dump power steering fluid in because after all it is the power steering pump .

    Just how many pumps have you gone through ??

    Just which brands have you been using ??

    Just what was the reason to rebuild the original??

    Did this all start with your rebuilding of the original pump??
     
  8. Apr 2, 2017 at 10:54 PM
    #8
    ewitwins

    ewitwins [OP] Member

    Joined:
    Mar 24, 2017
    Member:
    #214302
    Messages:
    7
    Gender:
    Male
    Alright, so just a quick update:

    Like many of you said, jacking it up and rotating lock to lock made it go away!

    ...aaaaand then it came back. And then went away for a few hours!

    ...and came back again. I read on another Tacoma forum that sometimes it takes awhile to bleed the system entirely after a flush and fluid change, does this sound normal?

    He used Dextron ATF, and this is the first pump I've had changed. I rebuilt the original because I thought the pump simply needed to be resealed.
     
  9. Apr 3, 2017 at 1:37 AM
    #9
    Wyoming09

    Wyoming09 Well-Known Member

    Joined:
    Apr 24, 2015
    Member:
    #153833
    Messages:
    6,542
    Gender:
    Male
    New Tripoli Pa
    Vehicle:
    2000 Work truck
    Super Springs
    It sounds like your sucking air into the system .

    You bleed it it works fine for some time then it is back again.

    Poor connection for what ever reason or something wrong internal in the pump

    Return line blockage or kinked enough to slow the return enough to cause the pump to cavitate

    Just some thoughts of things I have seen over the years
     
  10. Apr 3, 2017 at 6:37 AM
    #10
    harper7

    harper7 Well-Known Member

    Joined:
    Jun 16, 2011
    Member:
    #58360
    Messages:
    142
    Gender:
    Male
    First Name:
    Gary
    Tulsa/Claremore OK
    Vehicle:
    00 Imperial Jade 4x4 TRD,01 TRD 5sp
    Have you considered the rack and pinion unit itself?
    My pump whined pretty loud with the original R&P when turned near the stops. Changed the R&P for leaking and now the pump is quiet as a mouse.
     
  11. Apr 3, 2017 at 9:43 AM
    #11
    ewitwins

    ewitwins [OP] Member

    Joined:
    Mar 24, 2017
    Member:
    #214302
    Messages:
    7
    Gender:
    Male
    Man, I sure as hell hope not.

    I'll give the lines and connections a look, see if something is introducing air first.
     
  12. Aug 12, 2019 at 11:54 AM
    #12
    Drede_lander

    Drede_lander Active Member

    Joined:
    Nov 6, 2017
    Member:
    #235191
    Messages:
    33
    Gender:
    Male
    First Name:
    Andres
    Vehicle:
    TRD 4X4 Offroad - 2017
    op, did you get this fixed? I'm hearing the same noises
     
  13. Aug 12, 2019 at 12:04 PM
    #13
    Wulf

    Wulf back on my bullshit

    Joined:
    Jan 30, 2015
    Member:
    #147523
    Messages:
    12,299
    First Name:
    Jake
    Saudi Aurora
    Vehicle:
    amocaT 69
    Trail damage
    Look at your fluid in the sunlight. Does it have metal shaving in it (looks glittery)? If so the pump is shot.

    The noise is the bearing in the pump and can be caused by air in the system so when it's running check for fine bubbles in the reservoir.

    I'd be willing to be OPs mechanic never flushed the system or installed a filter to get all the shavings from the old pump out and the new one bit the dust too.
     
    cruiserguy likes this.
  14. Aug 12, 2019 at 12:15 PM
    #14
    Drede_lander

    Drede_lander Active Member

    Joined:
    Nov 6, 2017
    Member:
    #235191
    Messages:
    33
    Gender:
    Male
    First Name:
    Andres
    Vehicle:
    TRD 4X4 Offroad - 2017

    The sound I hear seems to come more from the steering rack, down by the rods, almost sounds like a lubrication issue...
     
  15. Aug 12, 2019 at 12:16 PM
    #15
    Wulf

    Wulf back on my bullshit

    Joined:
    Jan 30, 2015
    Member:
    #147523
    Messages:
    12,299
    First Name:
    Jake
    Saudi Aurora
    Vehicle:
    amocaT 69
    Trail damage
    What does the fluid look/smell like? Is it filled to the appropriate level?
     
  16. Aug 12, 2019 at 12:22 PM
    #16
    Drede_lander

    Drede_lander Active Member

    Joined:
    Nov 6, 2017
    Member:
    #235191
    Messages:
    33
    Gender:
    Male
    First Name:
    Andres
    Vehicle:
    TRD 4X4 Offroad - 2017
    yes, oil looks good in level, have not smelled it but will tonight. it only happens when stopped and turning. i thought about trying to put grease in the wheel yoke that connects to the rack, also in the boots of the rods. but then was told that my pump may have seen better days...
     
  17. Aug 12, 2019 at 5:36 PM
    #17
    96towcoma

    96towcoma Well-Known Member

    Joined:
    Jul 7, 2019
    Member:
    #298538
    Messages:
    139
    Gender:
    Male
    First Name:
    james
    Vehicle:
    1997 single cab 4x4
    I’m going to tell you exactly what it is. Your reservoir screen is clogged. I ended up having to take my reservoir apart and clean it with brake cleaner. Fluid wouldn’t make it through the screen fast enough, causing it to suck air and make the exact same noise you have. Cleaned the screen and my steering is quiet and butter smooth. Helpful tip...if you bend the four tabs that hold the top of the reservoir on you can pull the whole top half and cap off. That’s really the best way to do it....that gives you full access to the screen. Mine was horrible. No fluid getting through at all.

    Trust me on this. My post count may not be too high but I would honestly bet money on this being your issue. I JUST went through it. In fact I hate to say it but you probably never needed a pump to begin with.



    Here’s a video I found that shows the processhttps://m.youtube.com/watch?v=7u6za7NxUJU
     
    Last edited: Aug 12, 2019
  18. Aug 13, 2019 at 8:23 AM
    #18
    Drede_lander

    Drede_lander Active Member

    Joined:
    Nov 6, 2017
    Member:
    #235191
    Messages:
    33
    Gender:
    Male
    First Name:
    Andres
    Vehicle:
    TRD 4X4 Offroad - 2017
    I hope you are right cause it seems like a doable fix. Oil looked darker than what you'd want on steering application so it could be dirty. I turned the wheels yesterday in a cold start and no sounds. So this whining when turning comes on when the engine is hot. I would not mind changing the oil while I'm at it but it looks complicated beign that you have to vacuum and flush the system.
    My plan to ckean the reservoir filter was just to pump out enough oil so that I can remove the reservoir, clean, re-install and then fill up with new oil....sounds doable....?
     
  19. Aug 13, 2019 at 8:29 AM
    #19
    96towcoma

    96towcoma Well-Known Member

    Joined:
    Jul 7, 2019
    Member:
    #298538
    Messages:
    139
    Gender:
    Male
    First Name:
    james
    Vehicle:
    1997 single cab 4x4
    Trust me on this. This is your problem pull the reservoir off it’s real easy. It only takes three bolts. One of them is a little tough to get to you have to line the pulley up just right. Another symptom I had that you mentioned is it only happens when it’s warm. That’s because on a coldstart power steering fluid has had time to fill the line and seep through the screen. Once all that fluid gets sent back to the reservoir the lines are now full of air and that’s when the noise starts.Pm me If you need any help I can give you my phone number. I can also help you with flushing and changing the fluid. All you have to do is pull the return line and put it in a pitcher and steer the wheels back-and-forth Until the fluid coming into the pitcher is clear and clean.

    Also make sure you use ATF and not power steering fluid.
     
  20. Aug 13, 2019 at 9:02 AM
    #20
    ForestRunnerFrank99

    ForestRunnerFrank99 Well-Known Member

    Joined:
    Mar 10, 2019
    Member:
    #286162
    Messages:
    171
    Gender:
    Male
    First Name:
    Josh
    Rancho Cucamonga, CA
    Vehicle:
    Green 1999 TRD 4x4 Manual 3.4l v6
    Lift, Intake, Tires, Rims
    I replaced mine not to long ago and it also howled like a banshee. I did the proper procedure for flushing out the old fluid and bought whatever brand was recommended here to ensure it would be good fluid. Over time it quieted down and now it doesn't make any sounds at all. Maybe yours just needs to be "broken in" too?
     

Products Discussed in

To Top