I ws told the coupler(s) in my supercharger is going bad. It sounds like like something is grinding when I turn the engine off and also sound like a bunch of marbles banging around in it. they are inexpensive, but how difficult to fix?
The rattle you are/were hearing is typical on the Eaton blowers. After they get some miles on them, the coupler wears out and the holes become ob-longed or out of round which causes the rattle you are hearing.
Usually at idle you can hear it very clearly.
I have changed a few, and they are pretty simple to change. Just take off the supercharger belt, then you may have to remove your alternator bracket, depends on which years, drain the supercharger oil with a spray bottle sprayer (it does stink badly) then just remove the 10 or so bolts that hold the snout to the housing. Remember to keep track of where they go, some are different lengths.
You may have to use a rubber mallet, or your hand to hit the snout around to break the gaskets loose. Pull off the old black hockey puck looking thing (coupler) clean out the snout, attach new coupler, then reassemble and put new supercharger oil back in, and your rattle will be gone, at least for another 100k miles.
Best place to get a coupler is at,
http://www.zzperformance.com/grand_prix/products1.php?id=155&catid=106
Costs about 30, plus the few bottles of oil for the supercharger.
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Most likely cause of the noises you discribe are the bearings in the supercharger. You would be better off buying a remanufactured supercharger rather than attempting to replace the bearings yourself. Good luck.
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If i were to have the bearings replaced could i remove the supercharger and have it done, but is there a cover plate that could cover it until they got fixed?? would it work??
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