my car just started makeing a slight chirp noise i dont know if it is the supercharger or alternator but the noise is defanatly comeing frome that erea anyone know a way to figure out what it is

Does it only chirp right when you start the car for a while and then go away?

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Put a screw driver on the S/C, alternator, P/S pump, etc as close to the pulley as you can then put your ear to the screw driver. Listen for which one is the loudest and there you go, you've found the problem.

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Dubs:00 VW GTI VR6, Low and Slow 91 VW GTI 8v, Shave the Bay!! 91 VW Cabriolet 8v, bitch Basket
GP's:04 GP GT, Past now G-Ma's Girlfriend's 97 GP GT, "Project Pink Power"

you needz some new pulleyz

the 99 needs every single pulley all of them make noise but the tentioner lol had to rpelace that one it just fell a part

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

yes the chirp is only heard during cold start then after driveing for 20 min it stops

My 04 gtp does the same thing. Cold starts it chirps. Then goes away when warm. Started doing this after I put the headers on.

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1999 Z/28: full bolt ons, 3.73 gears, Yank SS 4k stall, Speed Inc S15 cam, ported 243's, ect.
2004 Comp G> K/N intake, Speed Daddy Headers, 3.6, cat back, Hids,
1999 GP GT:Intercooled zzp turbo set up, zzp tranny,ect SOLD:(

pulley barrings are going out

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater