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Noisy Supercharger. Bad Coupler?

JoelW98GTP

JoelW98GTP

New member
My coupler needs replaced and I was just doing some research and it seems like a lot of people have trouble distinguishing where it's the Idle Air Control Valve making the noise which is normal, or your supercharger couple is worn out and which is the culprit of the "rocks tumbling" sound. You can put your ear to the snout of the supercharger to verify where the sound is coming from. Here are two videos on you tube. The first one is the sound of a bad coupler. This sound is audible at an idle only. The second video is showing how to replace the coupler. I hope this helps somebody solve the problem.

Bad Coupler Noise:
YouTube - Supercharger noise

How To Replace The Coupler
YouTube - Replacing a worn out supercharger coupler on 3.8 GM engines
 
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the "tumbling rocks" is a bad coupler.

the "dragging a shovel on conrete" is the sound the IAC makes when the car is first started and is cold.

two completely different sounds.
 
Bio248 said:
the "tumbling rocks" is a bad coupler.

the "dragging a shovel on conrete" is the sound the IAC makes when the car is first started and is cold.

two completely different sounds.
Click to expand...

I took it as if the shovel would kind of be bouncing as you were dragging it along rough concrete making the pecking sound. I made a couple changes to include both of your suggestions. Thanks
 
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