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According to an old Mitchel manual. There are 2 signs that the water pump has gone out. First, check the "weep" hole for seepage. The "weep" hole is located under the water pump so you'll have to get under the car to check it. The second is to listen for for a high pitch squeal. This can be confused with a belt squeal so be careful.
Another thing to think about, is that a water pump is designed to turn in the direction of the belt; that is,it turns WITH the belt. There should be some clockwise/counter clockwise movement; there SHOULD NOT be any movement in ANY other direction. In other words,turning when the engine is running is good,but any movement when the engine IS NOT running,is NOT good. Also when the pump goes bad,you won't find a few drips under the car engine-you will usually find a small lake...usually but not always.
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