On Mon, 10 Nov 2003, Ben huot wrote: > Well, of course if the pump is dead (basicaly impossible!)the pressure will > rise. (Heat up = pressure up) Pump are design to "wear out", they are > "coolant lubricated", when one of the seal/bushing slowly fail, by design, > there is a small openning that let a small stream of coolant out, this is > sign that the pump is going away. If by any bad chance the pump would > completely failed (mechanicaly break), the belt would slip or break, the > alternator light would go on and you would hear a very hissy sound. There *is* one other failure mode. I know of a couple of people who have had the vanes corrode right off the impellors of water pumps. The pump spins just fine but the coolant doesn't go anywhere! I think it takes a serious lack of cooling system maintenance to reach this point. One of the cars (a Honda) had been run on straight water, so there were basically no anti-corrosion chemicals in the cooling system.
David Brodbeck, N8SRE '82 Diesel Westfalia '94 Honda Civic Si -- For Sale '86 Volvo 240DL wagon |
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