I have 208K+ miles on my original 1995 alternator and its still working. However, my sister had a Geo that literally ate alternators. The problem? Misalignment due to a bent mounting bracket. You may want to check the angle for the alternator pulley in relation to the crank pulley. It could be that the alternator isn't mounted as well as it might be, although it would have to be a slight off-angle considering where the alternator is positioned on our cars. Have you replaced the crank pulley? Perhaps its too far forward. Jerry aka LGO In a message dated 8/19/2010 3:19:43 P.M. Eastern Daylight Time, [email protected] writes:
I have replaced 3 alternators on my 94 M. I am using guaranteed alternators from a salvage yard. These alternators are still generating, the problem is the bearings. If I tighten the belts to the proper tightness there is a serious knocking and grinding noise that with a stethoscope I can trace defiantly to the alternator. The one now on the car has started making the noise. The belts are approximately 10 turns from tight. I adjust the belts until there is no slippage and stop there. Has anyone had this problem? Please help. Bruce Andrews
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