Xj Starting Issue

So i went to go to work yesterday morning & she wouldnt start, I went through all the standards, Air was ok, I had spark which leaves fuel so i hit it with some starting fluid & she fired up & died right out. Later in the evening I had amanda hop in shut the door & turn the key on while i listened for the fuel pump & nothing.

The temp didn’t drop below 50 over Wednesday night.
This morning I went & picked up my multi-meter & new fuel pump, When I got back for ****s & giggles I gave it another shot & she fired right up several times & I can hear the pump kick on.

Any Thoughts?

You can check the pressure on the rail, but if the pump acted up once it will do it again. And if I’m not mistaken 96 has a one year pump.