Rattling noise under hood of 2001 Saturn LW Stations Wagon
Yesterday when I started my car I heard a loud rattling noise under the hood. I got home & checked all fluids (oil, power steering, trans) and all levels were good. I did notice a vibration in the steering wheel when driving. Could it possiblly be the power steering pump?
Possibly, did you have the engine on with the hood open to pinpoint the source?
Yes. It's really more of a guess.
Rattling can be an accessory driven by the serpentine belt, look in that area. Maybe the water pump bearing? If it is the PS pump, I'd try turn the wheel back and forth while the engine is on and in Park to see if it gets worse or goes away. Also could be a loose motor mount, internal engine issue, etc. If your just guessing as I am, it might be worth taking it into the shop for diagnosis.
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