noise from supercharger

[johndoe35652]

when at idle sounds like rattle in the charger. with a little gas it goes away. What is causing this?

 

[fst4dr]

The coupler in the sc you need to replace I think all the 3800 vendors sell them.

 

[gtpinsc]

if it sounds like rocks tumbling around in the supercharger u will need a coupler. needle bearings have their own lil sound too if they go bad. here is the coupler link... its the most common thing to go wrong and its cheap and easy to fix.

ZZ Performance

 

[Scottydoggs]

heres a vid on how easy it is to change, you can get the coupler off ebay for 20 bucks if you want, but use the gm sc oil, its strongly recommended.

YouTube - Replacing a worn out supercharger coupler on 3.8 GM engines

 

[johndoe35652]

Thanks for all the help now I can make it quiet.