Originally Posted by
waldig
A running pump means nothing, the impeller can break / crack and no pumping is gonna happen. Take the hose off the outlet and power the pump to see if it does anything for real. My gallery has many articles and photos when I did pump testing and evaluations. Enjoy Woody
The pump "isn't running" the pump "will run" when I put an external power source to it. AKA, it's not getting power from the car itself. I am going to connect an external source of power again, and feel the hose to make sure it is flowing. I am about 80% sure this is not the problem. The problem appears to be the relay. Any insight on the relay would be much appreciated.