I have a 1998 Buick Regal GS with the 3.8L SC engine. It has 50k miles. At idle, I get a clanking which is clearly coming from the supercharger. This is a new occurrence (about two months). The noise disappears as I come off idle. It's worse at low idle (such as turning the steering wheel when stopped, or running the A/C). Is 50k miles a typical wear-out mileage for the supercharger? (SC oil has been checked and topped regularly by the dealer). This car is a creampuff and has been babied by my wife.
Is the supercharger a serviceable unit, or is it generally replaced in-whole? What would a dealer's typical charge be for this replacement? I know Joe's backyard garage can save me some $$$, but my wife wants dealer service.
Thanks! Neall