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Coolant circulation
The water pump pulley is spinning like it should be, but from what I've read, it is not uncommon for contour water pump impellar's to break. Does that mean the pulley could still turn and the impellar just sit there, not circulating any coolant? If I leave the coolant reservoir cap off start the car, let the car warm up, and I don't see any circulating/bubbling in the reservoir, does that mean the water pump is not circulating coolant?
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