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Re: Scraping Noise -- Coolant Pump/Water pump = same thing?
Posted by Makis (more from Makis) on Wed, 29 Dec 2004 11:58:10
In Reply to: Scraping Noise -- Coolant Pump/Water pump = same thing?, Bork, Wed, 29 Dec 2004 10:32:44
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Yes Coolant Pump is the same as Water Pump. You can release the tension by locking the tensioner in place. Then you can try to rotate the various components. It is unlikely that you will be able to identify the wrong one. This is because if you rotate by hand you don't apply enough pressure to the bearings to make them noisy. All the possible components in the front of the engine driven by serp. belt can have faulty bearings (power steering pump, water pump and air condioning compressor). What you can do you can lock the tensioner and start the engine. If there is no noise than you know the noise is indeed caused by the serp belt rotating components. It is possible the serpentine belt itself to be noisy if it is worn or the tensioner is not functioning properly. Try to switch electrics and/or AC on and off and listen to the noise. If it gets noisier when on then it could be the belt itself.
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