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Coolant Transfer Noise...FIXED!

Discussion in 'Gen 2 Prius Technical Discussion' started by BitShifter01, Jun 21, 2008.

  1. BitShifter01

    BitShifter01 New Member

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    Hello,

    For over a year the coolant pump in my Prius has made that interesting noise when you power it on/off in cold weather.

    See this thread here.
    http://priuschat.com/forums/care-maintenance-troubleshooting/38464-noise-start-up.html

    Well I recorded the noise and took it into the dealer to have them take a look at it. Even after watching the video they were a little reluctant to fix it. they wanted to leave the car overnight so they could power it on and hear the noise themselves.

    After a day they decided to replace the part under warranty. Since it has been replaced the only noise I hear is the standard pump running. According to them, there are two pumps, one for drawing fluid out of the thermos, and one for putting it back. Can someone tell me if this is true? I think they are just feeding me a line. The first time I went to pick up the car it still made the same noise, even though they said it was fixed. They then took it back in and replaced the 'other' pump and the noise went away. My mother and Grandfather both have Prii. My mom's 2007 Prius makes the same noise, but my grandfather's does not.

    I figured I would just spread the word to let you know it IS possible to get this pump replaced, as most of you know from reading other posts. It took me just a little persistence but it was finally replaced.

    Regards,
    BitShifter01
     
    #1 BitShifter01, Jun 21, 2008
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    No - there is only one coolant heat recovery pump, along with a rotary valve setup that allows the correct flow of fluid in and out of the thermos container as controlled by the engine ECU.

    Glad that you got the pump replaced under warranty.
     
    #2 Patrick Wong, Jun 21, 2008
  3. Rest

    Rest Active Member

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    We have a 2006 and 2007 Prius. One makes the weird pump noise after shutting it down and the other doesn't. I am going to have to learn more about this now
     
    #3 Rest, Jun 24, 2008
  4. JimboK

    JimboK One owner, low mileage

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    Galaxee recently posted that Toyota has now issued a TSB for it and it can be fixed under the power train warranty.
     
    #4 JimboK, Jun 25, 2008
  5. DGESSWIN

    DGESSWIN Junior Member

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    I have the pump on the right I ordered what I thought was the right pump. And the one on the left came in. Am I just ordering wrong parts? image.jpeg
     
    #5 DGESSWIN, Jul 3, 2017
  6. JC91006

    JC91006 Senior Member

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    The one on the right is the inverter pump, the one on the left is a 3 way coolant valve
     
    #6 JC91006, Jul 3, 2017
  7. DGESSWIN

    DGESSWIN Junior Member

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    Which one sounds like squealing mice?
     
    #7 DGESSWIN, Jul 3, 2017
  8. JC91006

    JC91006 Senior Member

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    Neither. Only one that makes a sound would be the thermos pump....like a tea kettle when it gets old.

    You should have failure codes on the parts you're replacing, or you'll end up replacing good parts for no reason
     
    #8 JC91006, Jul 3, 2017
  9. edthefox5

    edthefox5 Senior Member

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    Why do posters keep tagging on to ancient posts? You spend all that time searching then give us nothing. Just post a NEW THREAD and give us the year of the car, the mileage, how long you have owned it, and whats the problem. Why do you make us slog through years old posts to find you new post.

    I no longer reply to people that do this.
     
    #9 edthefox5, Jul 3, 2017
  10. DGESSWIN

    DGESSWIN Junior Member

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    It's really different from the Prius forum and the S197 mustang forum. If we don't search we ger blasted. Sorry if I offended you edthefox5 I'm just trying to make sense of this car. I have never had issues. Just normal maintenance.
    -Don
     
    #10 DGESSWIN, Jul 3, 2017
  11. edthefox5

    edthefox5 Senior Member

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    you didn't offend me it's just time consuming to go through years old posts to find your new one.
    And your new post will never show in the thread run downs. It's buried by the old posts and in the name of the original years ago poster.Then other people tag on to yours and now you have many different people asking for help in one thread it gets ridiculous. So I don't bother anymore.

    Other forums ask you to search but they don't mean re-post all that you find.

    You will have alot more views if you post a fresh post.
     
    #11 edthefox5, Jul 4, 2017
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