Supercharger noise?

[mick777wauchope]

I have been hearing rattling noises from my supercharger, so I replaced the coupler with a green one from ZZPerformance. It still rattles. What could this be?

I have a 2000 Grand Prix GTP

[TLSheff]

Do you have a Cold Air intake, or open cone filter in place??? or still the stock air box?

[bobeebob]

could be coating on rotors beginning to wear out. same thing happened to mine.

supercharger got loud even after rebuild, then started to loose boost.

[mick777wauchope]

I have an open cone...and it only rattles and low rpms, once any gas is given, it goes away. It occasionally sounds when accelerating but not that much.

[gtpeddie]

needle bearings probably