If it rattles at idle maby the coupler. Easy way to check is just pull the belt off and try and turn the pulley back and forth if it seems sloppy then its the coupler. Takes about 25-30 min to fix if you have never done it b4.
06 base open cone,2.5 inch dp into high-flow cat,window tint,drilled rotors.
97 GTP ubend delete,drilled and slotted rotors,de-badged,open cone,6k HID,All aftermarket speakers
If it rattles at idle maby the coupler. Easy way to check is just pull the belt off and try and turn the pulley back and forth if it seems sloppy then its the coupler. Takes about 25-30 min to fix if you have never done it b4.