The noise was present before the alt was replaced and the housing repaired.
One more important note. On a cold start there is no noise @ that 1100rpm for the first 45 seconds or so. Once the car settles into it its 900rpm idle (car has a chip) that when the noise appears. I do find myself stalling out occasionally from stop to start in first gear. But the car idles fine at 900rpm so i don't think its a vacuum issue.
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1986 3.2 Meteor Metallic Grey
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