Thread: Whining From Supercharger

Im getting a low to high pitch whine coming from my Supercharger as I accellerate and its getting worse. I have a 1998 Pontiac Grand Prix GTP. This started about a week ago and I just changed the coupler in the Snout and I used GM Supercharger Oil about the same time. I think it might be the Rotor bearings going bad but Im not sure. Any answer as to what this could be will be greatly appreciated. A friend of mine said that when I changed the oil I cleaned out what was keeping the bearings from failing, but the bearing problem would have showed up anyway. I have 137,000 miles on the engine and I keep the fluids top off and changed regularly. No leaks at all.

Originally Posted by Grand Prix1

Im getting a low to high pitch wine coming from my Supercharger as I accellerate and its getting worse. I have a 1998 Pontiac Grand Prix GTP. This started about a week ago and I just changed the coupler in the Snout and I used GM Supercharger Oil about the same time. I think it might be the Rotor bearings going bad but Im not sure. Any answer as to what this could be will be greatly appreciated. A friend of mine said that when I changed the oil I cleaned out what was keeping the bearings from failing, but the bearing problem would have showed up anyway. I have 137,000 miles on the engine and I keep the fluids top off and changed regularly. No leaks at all.

Yep it's the bearings, mine did the same. If you want to isolate it completly to the S/C then just take off the belt and drive it. See if it's making the same noise. But chances are it is the bearings.

Simple check is pull the belts and roll the pulleys, every pulley except the balancer should roll smoothly, if it grinds, hesitates, or has a rough spot it needs to be replaced.
Just a check before you go thru the hassle to replace the SC bearing to find out its still there and it was just a $5.00 idler pulley

Superchargers are supposed to whine...wth