Markus
Posts: 36
Joined: 1/21/2008
Status: offline
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If you are certain the noise is from the supercharger (and not the secondary tensioners!), probably need to replace the supercharger pulley - mine sounded exactly like that, replaced pulley, no further noise 40,000 miles later. There are no lube points on the supercharger, but the manufacturer of the s/c does recommend changing the supercharger oil periodically - details here:
Parts:
You will need two bottles of GM supercharger oil, GM p/n: 12345982 , this can be purchased at any GM dealership
Tools:
Turkey baster
Short hose- needs to fit over end of turkey baster, and in s/c plug, about
6" long.
3/16 Allen wrench or hex bit
NOTE: Make sure that your engine is cool before starting this!
1-Unscrew the super charger oil inspection plug (a black plug at the front of the
super charger snout using a 3/16 hex head).
2-Insert the tube (that''s attached to the turkey baster in to the hole and suck out as much oil as you can. This may have to be done many times to remove as much of the oil that you can. Dispose
of your old/used oil with your old motor oil in an environmentally SAFE manner.
3- Add the oil until it fills the snout to the bottom of the threads. It will take almost two bottles. Be careful to NOT overfill!
4- Screw the plug back in and do not over torque. 8-12 ft/lbs is more than enough!
5- After driving around for a day or so, check the oil level while the car is on a level surface. It''s also a good idea to check the level of your supercharger snout at every oil change.
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1999XJR Supercharger Noise? - 
