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Screeching sound after picking up car from oil change

Discussion in 'Gen 2 Prius Main Forum' started by Daytripper, Apr 20, 2021.

  1. Daytripper

    Daytripper Junior Member

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    2008 Prius
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    So I picked up my 2008 Prius from the mechanic this afternoon. The only thing they did was an oil change and 27 point inspection. The form says they checked but did not fill any fluids. They did fill the tires. And also they checked a bunch of components. 10 miles into my drive home and right after making a turn and going up a slight hill, the engine started screeching something awful. Never in my life have I heard a car make that noise. It sounded like it was coming from under the hood. I pulled over and called the mechanic and let him listen to it before turning off the car. He asked me to turn down the fan to see if the sound went away or changed but it didn’t. It didn’t come back on when I turned the car back on. I’m taking the car back tomorrow but any ideas what it could be? Unless it’s the coincidence of a lifetime, the mechanic did something that caused this, but what? Never had any trouble with this car and the mechanic said the car was in good shape. They are Toyota specialists and have solid reviews.
     
  2. edthefox5

    edthefox5 Senior Member

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    What does turn down the fan mean? Maybe he’s thinking the car has a belt powered ac compressor sometimes the belt screeches if the compressor locks up.
    The Prius ac compressor is beltless.

    Miles?
     
  3. Daytripper

    Daytripper Junior Member

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    Turn down the air. I switched it to the lowest level and turned off the A/C, didn’t help. He thought it might have to do with the air filter, I think. I might have misheard, it was pretty loud and I was a bit alarmed.
     
  4. Mendel Leisk

    Mendel Leisk Senior Member

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    Check the oil level. First. Just in case.
     
    Rmay635703 and fuzzy1 like this.
  5. dbstoo

    dbstoo Senior Member

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    Based on the description, it sounds like a tool, rag or the like may have been left under the hood and that it slipped into a spot where there were moving parts, like against a belt. The up
     
  6. bisco

    bisco cookie crumbler

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    maybe they spilled oil on the waterpump belt
     
  7. ski.dive

    ski.dive Active Member

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    Have you looked in your engine bay to see where the sound is coming from???

    And yes- check your oil level too