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Q: engine squeaking on 2002 Oldsmobile Alero

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My engine squeaks near the top. The belt is new and in good shap. The water pump in new as well. Could it be the cam?
(1) Answer
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Unlikely. Could be insufficient tension on the belt, could be a contaminated belt, or failing tensioner or idler bearing. Does the noise get if air conditioning or steering is turned sharply?
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