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Old 08-04-2007, 11:51 PM
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1991 olds 88 noise and cam sensor

Hello everyone....still fixin this thing up and havning fun. Anyway, I replaced the cam sensor over a year ago and noticed rubbing marks on the old sensor. Does this mean the cam is walking, and its time for chain replacement? I have seen a post where there is an updated cam button with a bearing instead of just a plastic cam button but the post didnt list or say where to get this part. I would also like to know where to get a timing cover for it. The same poster person said his kid worked for a parts company but didnt say which company. Does anyone know if a walking cam will make a noise when you revv the engine. It makes the whirring noise when the rpms are close to idle.....so rev it.......let go and when the engine returns to idle, it whirrs with a slight raspy noise when almost back at idle rpm. Sounds like the combination of a dry bearing and an exhaust shield rattle.......if that helps heheheh

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