Please help! Our car has been overheating. We have replaced the thermal sensor, thermostat & radiator fan motor. Someone said that it is probably the water pump. Is there anyway to replace this WITHOUT using a mechanic? They said it would cost $700. We don't have that kind of money right now. Also, the thing that holds the coolant is now bubbling. Is there air somewhere in it? How can I get it unclogged?
Use the car repair link in the thread or get a Haynes manual, some autoparts store will let you look at a Haynes manual, to give you an idea of what you are getting into.
Some water pumps are pretty straightfoward, some are difficult.
You can take the radiator cap off run the engine until the thermostat opens and see if water is flowing, if not, the pump will have to be changed.