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Engine water pump

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by AVERAGE_J, Dec 31, 2014.

  1. AVERAGE_J

    AVERAGE_J New Member

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    Hello all,

    Happy holidays and soon to be new year.

    I took my 2007 prius (96000 miles) in today for an oil change. Dealer tells me there is a leakage in the engine water pump. Not the electric one but the engine one. He shows me a very small amount of pink coolant. He stated it just began. I find it coincidental that it just began because at 92500 miles, they replaced my serpentine belt. The picture is hard to see where the leakage is, but its a small amount right at the pink arrow. They quoted me to replaced the water pump $506 bucks. I asked him what is wrong with it, he stated the gasket is worn out due to time and usage. I tried to reason it out and I said ok since i am at 95965 miles. But what I have a tough time believing is the legitimization of the diagnosis. On the last oil change, they replaced the serpentine belt. This oil change they tell me the water pump. They said, "IT JUST STARTED". Am I being taken to the cleaners here? I am just an average jane and don't know much about cars. Please check the picture to see the area of the leak. Its very small amount.

    second, is $506 reasonable for Newark, Delaware? Anyone have a good recommendation in the area? The water pump is not leaking, he said its just the gasket wear and tear. Replacing the gasket takes $506?

    Thanks for all your replies in advance.
     

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  2. AVERAGE_J

    AVERAGE_J New Member

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    UPDATE

    Since water pump leakage is a big deal and repair, I wanted to get on top of this issue to prevent myself from further headaches. I just spoke to them again, and they said the "failure part is the seal not the pump itself". Can't they just replace the sealant, which I believe is a small piece of black rubber?

    Also, can this job be done at a local mechanic to save money? Or i should go with the dealer. they stated they do not just replace the sealant but they need to replace the whole engine water pump.

    Once again, THANK YOU IN ADVANCE FOR YOUR HELP!
     
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

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    The coolant leakage is due to a failing coolant pump bearing seal. Yes, it looks like the failure is recent.

    The problem is not a failed gasket. The pump must be removed and replaced with a new pump. Check with other Toyota dealers in your area to see what the prevailing pricing is.

    An independent mechanic could replace the pump - but a special technique is required to purge air out of the engine coolant system. Hence I do not advise that unless the independent specializes in Toyota hybrid vehicle repair.
     
  4. hchu1

    hchu1 Active Member

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    What Patrick said.
     
  5. wjtracy

    wjtracy Senior Member

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    Mine leaked pretty bad around 80000 miles and I added the Toyota special red coolant, and kept an eye on it. Well after a while the leak stopped at here are 145000 miles orig water pump.

    This item is commonly replaced under extended warranty for those who have that.
     
  6. AVERAGE_J

    AVERAGE_J New Member

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    My car is a 2007 with 96000 miles. I don't believe its under warranty any longer. Thanks for all the replies.

    But couldn't an independent mechanic do the air bubble purge also? What is the ramification of the air bubble if the independent mech. did not do it? TIA
     
  7. JC91006

    JC91006 Senior Member

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    I've read many times from owners who replace their belts, the water pump begins to leak shortly afterwards.

    There are write ups on here and even youtube showing how to replace this yourself, it's takes about an hour and part costs about $45 on amazon for the aisin manufactured oem pump.

    This would be a good time to change out your coolant as well since it's recommended every 100k miles.

    The leak is actually pretty minor, you can monitor the coolant level and top off the fluid for a while. It's a very very very slow leak
     
  8. AVERAGE_J

    AVERAGE_J New Member

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    1st, I CAN'T THANK YOU ENOUGH FOR ALL YOUR REPLIES AND HELP. Its so good to see this kind of help is available around the world. My dire, burning question is was this intentionally done by fault of the dealership. I just can't fathom coincidentally that on the last oil change i had my serpentine belt changed and 3 months later this happens.

    I am looking into an independent mech. to save some money. Can really use the savings for son's birthday present coming up.
     
  9. Patrick Wong

    Patrick Wong DIY Enthusiast

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    No.

    In that case make sure the mechanic is willing to download the relevant repair manual info at techinfo.toyota.com so s/he can understand the procedure involved.

    You do not want someone working on your car who brags about having 25 years of experience and who perceives no need to refresh that knowledge with respect to Toyota hybrids.
     
  10. AVERAGE_J

    AVERAGE_J New Member

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    Great idea. but hard for a novice to recommend an old dog to learn a new trick. afraid any mech will find that rude. anyway, no way for me to be assured that they do and follow it. So, is there a way i can ensure that h/she did the air bubble purge?

    planning to take a 1500 mile road trip. since the leak is a very slow slow slow and fresh leakage, is this the kind of thing that all of a sudden it can't go gaboom and we will be safe for the 1500 mile road trip (750 each way).
     
  11. JC91006

    JC91006 Senior Member

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    If you wish to wait on this repair, you can buy some "super long life coolant" at your local dealer (it's expensive stuff at around $25 gallon), check your radiator (remove the cap) and reservoir levels. Top off the fluid if low. You probably won't even notice a drop in coolant when you return from your 1500 mile trip, it's really that slow of a leak.
     
  12. Patrick Wong

    Patrick Wong DIY Enthusiast

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    This is why I do not recommend having an independent do this job if not a Toyota hybrid specialist. You will find that there is a problem when your cabin heater doesn't work, you hear air bubbling around in the cabin heater core, or your engine overheats.

    OK to take your road trip. Buy a gallon of Toyota Super Long Life Coolant from your local Toyota dealer's parts dept, bring it with you, and periodically check the coolant level in the radiator in the morning, before starting the car (don't rely on just looking the overflow tank). You must remove the large black plastic cover over the radiator for access to the radiator cap. The fluid level should be at the top of the radiator neck.
     
  13. Britprius

    Britprius Senior Member

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    The gen2 Prius engine is no different to other non hybrid cars made by Toyota as far as the cooling system is concerned sharing the same coolant pump as the Yaris and others using the 1.5 ltr engine.
    Many modern vehicles "not all" have problems with airlocks when the cooling system is drained and refilled not just Toyota's. Any workshop with an experienced mechanic should be capable when forewarned of the likelihood of an airlock be capable of changing the engine coolant pump in about 1 hour.
    As JC above says as long as you keep an eye on the coolant level, and only very small amounts of fluid are needed to maintain the level you should be good for many miles yet on the original pump.

    John (Britprius)
     
  14. AVERAGE_J

    AVERAGE_J New Member

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    Does the inverter coolant uses the same liquid as the engine coolant reservoir? I bought a gallon of the pink colored Toyota long last life coolant. I was going to pour some into the engine coolant reservoir and i saw the inverter coolant was a little low.
     
  15. dolj

    dolj Senior Member

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    Yes, it does.
     
  16. AVERAGE_J

    AVERAGE_J New Member

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  17. dolj

    dolj Senior Member

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    Don't take it personally, mechanics are not sexist, I have had the same "advice" about the water pump. I kept an eye on the level in the radiator (not the overflow reservoir) and never had to add a drop. That's not to say the leak will not get worse over time, so keep an eye on it.
     
  18. AVERAGE_J

    AVERAGE_J New Member

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    So if i need to add the coolant, do i add it to the radiator or the resevoir tank?

    I checked a youtube video on how to change the coolant for the inverter and radiator, it looks pretty easy. Might have my son watch the video and us two might do it together. Is it just a matter of unscrewing the bolt under the bottom of engine, let it drain, pour in new coolant, run the heater on high until no more air bubbling, add more coolant if needed and ur done. I m excited for my first car job.
     
  19. JC91006

    JC91006 Senior Member

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    Add coolant to the radiator first, then reservoir