Will my water pump leak if it's not working on my 2001 Toyota Avalon?

Asked by Jul 04, 2019 at 10:35 AM about the 2001 Toyota Avalon

Question type: Maintenance & Repair

Running hot problems. Changed, thermostat,
radiator & hoses. Just not the water pump. It's not
leaking from anywhere & there's no water in the oil.

3 Answers


Water pump impellers wear down over time and the pump van be defective with no outward signs. Could be that or maybe you fixed the problem and there's just air in the system that needs to be purged. See on-line videos for that.

1 people found this helpful.

Before changing anymore stuff, first confirm that your radiator cooling fans are coming on at the right time. If not, check fan fuse, fan relay, coolant temp sensor and fan motor. Concerning water pumps: if they are turning, they are pumping. However, there are cases of water pumps with plastic impellers deteriorating so it won't pump. Can't tell without removing it but first, try to look down into the radiator for movement/flow of coolant while revving the engine while hot. That would indicate if it's pumping.

1 people found this helpful.

I agree. The water pump doesn't have to be leaking to be bad. I ran into this with my 2000 Grand Prix. The metal impeller had rusted away! The impeller is the fan looking thing on the inside of the water pump. As it spins it moves the coolant through the cooling system. Hope that helps! Jim

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