problem with fuel pump??

I changed my fuel pump thinking that was the problem but after testing it, there is no power running back to the fuel pump. Is there maybe a relay problem or something??

Hard to say or give advice. We don't know what you are driving or know what your problem is. A signature is a good place to put car info.

Assuming you have a 4th gen, sometimes the connector at the fuel pump gets corroded, and that's the whole problem.