Weird noise coming from engine
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2009-2014 Cadillac CTS-V General Discussion Discussion, Weird noise coming from engine in Cadillac CTS-V Series Forum - 2009-2014; Hey everyone, has anyone ever heard something like this come out of their engine? Just started making this noise out ...
  1. #1
    CTSV21 is offline Cadillac Owners Member
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    Weird noise coming from engine

    Hey everyone, has anyone ever heard something like this come out of their engine? Just started making this noise out of no where, i'm pretty sure the sound is coming from the supercharger


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    nynd is online now Cadillac Owners Fanatic
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    Re: Weird noise coming from engine

    Probably the bearings in the supercharger are gone? There was always the infamous rattle from the counterweight isolator that some switched but this sounds different than that - unless the shaft is bent or broken (the ones that has the isolator on it)

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    CTSV21 is offline Cadillac Owners Member
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    Re: Weird noise coming from engine

    Well I did have the infamous supercharger rattle before this noise started. I was actually planning on taking it to the dealer sometime soon about the rattle and then this started.

    Just got my KW's installed too

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    Re: Weird noise coming from engine

    Yeah, thats not the famous "rattle". Your noise doesnt seem to be consistant and is much higher pitched. Not sure what it is for sure...dealer time.

  6. #5
    CTSV21 is offline Cadillac Owners Member
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    Re: Weird noise coming from engine

    Quote Originally Posted by CoppeR View Post
    Yeah, thats not the famous "rattle". Your noise doesnt seem to be consistant and is much higher pitched. Not sure what it is for sure...dealer time.
    Yeah that's not the normal rattle, which sounds like a couple marbles in the engine. This is something way worse.
    We'll see what the dealer says, just wanted to see if any members here had a similar sound before.

  7. #6
    Trapspeed's Avatar
    Trapspeed is offline Cadillac Owners Connoisseur
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    My money is on bearing failure. I don't know I'd even drive it unless you're prepared to smoke a belt.

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    Mongopush is offline Cadillac Owners Member
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    Re: Weird noise coming from engine

    I would take the time and put the stock intake back on ,that is if under warranty. No need to give them a reason to turn you away.

  9. #8
    CTSV21 is offline Cadillac Owners Member
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    Re: Weird noise coming from engine

    Quote Originally Posted by Mongopush View Post
    I would take the time and put the stock intake back on ,that is if under warranty. No need to give them a reason to turn you away.
    Yeah I just did that for that exact reason

  10. #9
    Txstang1 is offline Cadillac Owners Member
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    Re: Weird noise coming from engine

    Mine started making th eexact same noise Friday. I took in this morning and they replaced the supercharger.

  11. #10
    Moneypenny is offline Cadillac Owners Member
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    Re: Weird noise coming from engine

    How many miles on the car?

  12. #11
    sybersport is offline Cadillac Owners Fanatic
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    Re: Weird noise coming from engine

    That sound brought back memories - I had it start when I was in Chicago, on my way back to Toronto...

    I'm not sure exactly what the problem was. All I know is that they replaced the entire supercharger, no questions asked. Problem solved.

  13. #12
    CTSV21 is offline Cadillac Owners Member
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    Re: Weird noise coming from engine

    Hey guys, so I took the car to the dealer and the service guy i'm dealing with says that there is nothing he can do because he has a bulletin claiming that the noise is normal.

    Unfortunately the noise from the video stopped so I couldn't reproduce that sound in person but i showed them the audio from my phone when I dropped it off. I bet the bulletin is for the common rattle but this has to be worse than that. Don't know what to do next... Am I suppose to just take it back until it comes back again??

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    Re: Weird noise coming from engine

    Get a mechanics stethoscope and see if you can isolate it. It could be the alternator, idler pulley or something other than the supercharger. Even though it's quit for the moment, you may be able to find it with a stethoscope...

  15. #14
    CTSV21 is offline Cadillac Owners Member
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    Re: Weird noise coming from engine

    Heres another video with the same sound and it says its a bad bearing. Just got this from another thread about a bad supercharger.

    ----------

    BTW my car is a 2012 with 21K miles

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    Re: Weird noise coming from engine

    Can you take it to a different dealer?

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