First, make sure the pump is the issue and not a bad hose. If the pump is bad, there is a weep hole under it where the coolant will leak from. As far as looking for the leak, refill the system (with just water because it will need replaced with coolant when you make the repair) and see if you can see the leak. If not, start the engine and allow it to warm up (not overheat) and see if it starts leaking then. If nothing is found, you will need to pressure test the system. Most parts stores will lend or rent the tool to you. It just screws onto where the radiator cap goes and is a hand pump that pressurizes the system. It there is a leak, you will see it when the pressure builds.
As far as a mechanic, it calls for around 3 hours labor to replace it. It isn't a hard job, but there are many parts that need removed to access it. If you get yourself a good manual at a parts store, you should be fine if you have the basic sockets, wrenches...
Let me know what you find or if you have other questions.
Joe
Feb 25, 2021 at 11:36 AM
(Merged)