I have recently discovered that some cars have an alternator "clutching pulley" that freewheels during specific usage.
Q: Does anyone have an informed mind on exactly how and when the special pulley does its thing?...
1. Disengages/unlocks only at high rpm?
2. Any known alt failures.... IF a standard pulley is used instead?
I need your input asap as I need to resolve my Carrera's issue right away. Im about to swap it out with another but need to it figure out
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I personally replaced my 996 alternator two weeks ago with a reman. My 911 ran sweet! (+ a new Optima red top batt.) Saw about 14v at all times. I think it started failing yesterday.
Im hearing a low tone whine, smelling a burnt odor and the voltage had dropped to a varying 12-12.7 v.
After some digging on the web I now see that there are TWO variants.
Some vendors list one or the other for the same model /yr.. with no details on it.
I now believe I originally had the the clutching/freewheeling pulley and my reman may of died because of some kind of non -compatibility .
Any thoughts? I would appreciate any web-links to a source of info as well.
Matt