Does the fuel pump on a 02' escape have a gas sensor on it, where it will not turn on if there is not gas in the tank. I bought a replacement pump and wanted to see if it worked correctly. I hooked up the electrical but did not put it in the tank. I wanted to see if i could hear a hummming sound or not. I did not hear any sound. I am trying to figure out if the new pump i got is good or bad.