Buzzing/screeching sound coming from engine while turned off

[H2P]

Hey came home late tonight and decided I should drain the oil catch can. I let the car cool off for about 45 minutes to an hour and when I popped the hood there was a weird sound coming from the engine area. I’ll attach a video. Anyone know what this is? Is this normal or should I be taking it back to the shop?

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[Torched10]

Hey came home late tonight and decided I should drain the oil catch can. I let the car cool off for about 45 minutes to an hour and when I popped the hood there was a weird sound coming from the engine area. I’ll attach a video. Anyone know what this is? Is this normal or should I be taking it back to the shop?

Try disconnecting battery

 

[Linkster1666]

IT'S BECOME SENTIENT, RUN!!!

 

[EFI]

I posted about that a while back. It's coming from the AC compressor and only appears after I shut off the car and use the AC during the drive prior. It eventually goes away and doesn't come back until I use the AC again.

I still have not gotten a solid answer as to what it is.

 

[CVCashmere]

EFI right be right.

Drive it to get it warm but without the A/C on. See if the sound still emanates from the hoses.

CVCashmere

 

[Linkster1666]

Wait until they hear the Exhaust pop and snap as it cools off, that will be fun.

 

[Park]

Man, that is weird

 

[Mr. Met]

I think your engine is getting a fax.

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