GT350 Engine Idle Whistling Sound

[Lennx]

I recently just purchased my 2018 GT350. I am noticing that I get a high pitched squeaking/hiss sound during idle that is more prominent when underneath the car. Does not go away with AC turned off or clutch pressed in. Seems to make the sound based on the engine speed. Is this normal? Thanks for the help.

Link to YouTube short with the sound.

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[MiamiGT350]

To me it sounds like the direct injection pump, but I gotta admit it sounds louder than what I recall. See the below video at 1:50. You might want to compare it to the rod-knock at ~2:25 which will get louder when the car warms up.

 

[Hack]

There's no direct injection on a GT350.

I'm not sure I heard anything unusual. If anything, it could be the bearing in an idler pulley or one of the engine accessories. I would continue driving it and monitor for now. If it starts getting significantly worse, then it will be a lot easier to diagnose which bearing is failing and replace the correct one right away.

 

[MiamiGT350]

There's no direct injection on a GT350.

Ah, OP is in a GT350. So scratch the DI pump. Are you able to lift the car to see if it is localized to the alternator or a pulley?

 

[Lennx]

Thanks for the thoughts/replies. I do not have access to a lift but will continue to monitor closely. Here is a video of it from the interior with windows down. Seems to only be present once engine is warm. It sounds like a very high pitched whistling noise which sounds a little bit like forced induction but obviously I am not.

 

[JAJ]

I recently just purchased my 2018 GT350. I am noticing that I get a high pitched squeaking/hiss sound during idle that is more prominent when underneath the car. Does not go away with AC turned off or clutch pressed in. Seems to make the sound based on the engine speed. Is this normal? Thanks for the help.

Link to YouTube short with the sound.

Sounds like a GT350 engine to me. Nothing unusual.

 

[Nfs1000f]

Sounds like somebody vandalized your car and put turbos on it.

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