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Noise is heard when the car stops

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Leoooo, Nov 13, 2024 at 10:23 AM.

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  1. Leoooo

    Leoooo New Member

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    Hello everyone, I'm very happy to become a member of the Prius family not long ago. My car is a 2009 touring with 97,000 miles. The car runs well, but I have been hearing this noise for about a week. It used to be able to stop for a while, but now it seems that I can hear it all the time. It is a sharp buzzing sound, which is very obvious every time I stop or park. I found that this sound comes from the electric motor and the engine. I put my ear close to the engine to listen, and the noise of the electric motor and the engine is different. The electric motor is very similar to the noise I heard, but the engine noise sounds sharper. As a tinnitus patient, I hate this noise. Does anyone know where the problem comes from?

     
    #1 Leoooo, Nov 13, 2024 at 10:23 AM
  2. Tombukt2

    Tombukt2 Senior Member

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    Absolutely pump costly .. inverter pump is similar . Less expensive . Soon brake codes appear and braking greatly reduced .
     
    #2 Tombukt2, Nov 14, 2024 at 8:26 AM
  3. saneesh8

    saneesh8 Junior Member

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    Can you remove the power to inverter coolant pump and check ? It might throw codes. Also the coolant storage pump is in the same area. If possible, try with a mechanic stethoscope.
     
    #3 saneesh8, Nov 14, 2024 at 10:21 AM
  4. Leoooo

    Leoooo New Member

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    This for your reply, But the noise is very smooth, without any clicking sound.
     
    #4 Leoooo, Nov 16, 2024 at 4:42 PM
  5. Leoooo

    Leoooo New Member

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    I'm not a professional and I don't have professional tools, so I can only ask a mechanic to check it. Thank you for your reply!
     
    #5 Leoooo, Nov 16, 2024 at 4:43 PM
  6. Tombukt2

    Tombukt2 Senior Member

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    You don't need to unplug a connector. Wen noise is happening touch a different pump valve until you find the culprit you will feel it inverter pump CHS tank pump 3 way valve are all right up front .no tools to feel
     
    #6 Tombukt2, Nov 17, 2024 at 7:25 AM
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