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Should I replace my water pump?

Discussion in 'Technical Chat' started by roytown, Sep 15, 2017.

  1. Sep 15, 2017 at 9:59 AM
    #1
    roytown

    roytown [OP] Well-Known Member

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    2009 v6 with 108,xxx miles. I'm planning on a coolant flush very soon and I have already went and purchased new hoses and the 170 degree thermostat to replace both while I'm changing the coolant.

    I've heard many people talk about how their water pump went out close to 100k miles. Since I'm already over that marker I'm wondering if I should go ahead and replace the pump too since I'm gonna be in there??

    I have no reason to think my pump is failing due to there not being any leaks or high pitch noises. There is a kinda strange rattling noise at low (and I mean low) RPM; its during almost all operating conditions: in park, neutral, reverse or drive with a load and no load. It seems when the AC is on it's slightly louder for sure but idk what to think really.

    So the question stands, do I go ahead and replace the pump since I'm in there?

    Thanks yall!
     
  2. Sep 15, 2017 at 1:16 PM
    #2
    Wishbone Runner

    Wishbone Runner Because 4R

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    Certainly not going to hurt, good preventative maintenance.
     
    gearcruncher likes this.
  3. Sep 15, 2017 at 8:37 PM
    #3
    roytown

    roytown [OP] Well-Known Member

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    OK so any TW preferences on a manufacturer, should I go ahead and do the belt too, it looks like it's actually in good shape.

    Maybe it was changed, not on the service history though, seems either last two owners were DIYers or just went to shops that didn't report.
     
  4. Sep 15, 2017 at 8:41 PM
    #4
    Bishop84

    Bishop84 Well-Known Member

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    I always suggest a new belt with a new water pump. It doesn't get removed as often as the older timing belt engines did.

    Also inspect the idler pulleys carefully while doing the pump, they have a higher rate of failure than the accesories. 3 Idlers, 1 tensioner bearing.
     
    MotoEd and theredofshaw like this.
  5. Sep 15, 2017 at 8:50 PM
    #5
    windsor

    windsor Just a guy

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    Replace the belt. Put the "old" one in the storage compartment as a spare.
     
    toyodajeff and MotoEd like this.
  6. Sep 15, 2017 at 8:53 PM
    #6
    MotoEd

    MotoEd Ed-MotoEd

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    When you change the water pump, be very careful of the o-ring on the top. It is very easy to pinch or tear when installing. Also buy a new gasket.


    Not the right water pump gasket
    download (8).jpg

    This is the right water pump and gasket.
    The blue circle is where the o-rings goes.
    20170915_205153.jpg
     
  7. Sep 15, 2017 at 8:56 PM
    #7
    MotoEd

    MotoEd Ed-MotoEd

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    Belt is coming off anyways when you do the water pump. Might as well just through a new one on for peace of mind and keep the old one for an emergency spare like mentioned above. Pull the fan shroud for more access and to get the fan and fan clutch out.
     
    Lord Helmet likes this.
  8. Sep 16, 2017 at 12:01 PM
    #8
    roytown

    roytown [OP] Well-Known Member

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    Okay, thanks y'all this is good stuff to know.

    So go for OEM water pump then?

    And for the idler pulley, what is the correct way to inspect them, is it just visual; am I looking for free play; are they going to be loose or slipping?
     
    MotoEd likes this.
  9. Sep 27, 2017 at 1:01 AM
    #9
    JJ04TACO

    JJ04TACO Well-Known Member

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    Water pumps are cheap. Well mine was less than 100 bucks. Anything you can replace while in the area is a good idea. Pulleys, pumps, seals, gaskets, hoses, belts. One swoop and you should be good to go for 100k more miles. I did all of that stuff at 170K miles/13 years. Everything looked good but, you never know. I went all OEM. Parts and labor I was at $1000 from the dealer. I sourced my parts...
     
  10. Sep 28, 2017 at 9:31 AM
    #10
    roytown

    roytown [OP] Well-Known Member

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    Well I'll certainly go for the Aisin water pump since it seems its the part Toyota uses, just without their name on it.

    Any comments on the Gates ACK070834 Belt Drive Kit, I found it on Amazon and it seems like its a good price. Anyone have some experience with Gates and its quality?
     
  11. Sep 28, 2017 at 9:56 AM
    #11
    JJ04TACO

    JJ04TACO Well-Known Member

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    On eBay, there is a guy (Aircabinman) who buys OEM parts in bulk. His prices are very good and he has a few “kits” available for Tacos. You can check him out and see if he has what you need. Lots of guys, including myself, are very happy with him.
     
    I married my tacoma likes this.

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