2009-2015 Cadillac CTS-V General Discussion Discussion, Weird noise coming from engine in Cadillac CTS-V Series Forum - 2009-2015; Hey everyone, has anyone ever heard something like this come out of their engine? Just started making this noise out ...
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)
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.
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??
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...