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Hello, Jamison here, BAD BEARING IN ALTERNATOR,,,,, Remove belt, see if armature has slack in bearings,,, It wont be much., it is likely the back one, it will be more difficult to detect,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,Jamison.

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Q: There is a grinding noise coming from the valve cover area of your 1990 Toyota Cressida It goes away when you put a load on the alternator?
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