TwinTurbo.NET: Nissan 300ZX forum - Strange buzzing noise heard at idle
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Subject Strange buzzing noise heard at idle
     
Posted by ttsmokin on June 27, 2015 at 4:02 PM
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Message I noticed a buzzing noise that comes on and off randomly at idle while I was adjusting my IACV. It's a higher pitch buzz that seems to be coming from the top of the engine, plenum area. Sort of sounds like a solenoid buzzing away. You can't hear it from the driver's seat.

https://youtu.be/fxImplw-xUQ

You will know what the noise is when you hear it stop and start again.

     
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