I have a clicking sound that sounds like it is coming from the water pump. I bought an Aisin water pump to replace the factory Toyota pump. When I pulled the pump I discovered that the Toyota pump seems to be in great shape and that there is significant corrosion inside the housing for the water pump. Could that have been the source of the ticking? When I hold the old pump in place and turn it, it doesn't seem to be making contact with anything. What should I do?
My cooling system seemed to have a mixture of green and orange, but no apparent sludge.
My cooling system seemed to have a mixture of green and orange, but no apparent sludge.