I have a 98 ex V6 that was having intermittent dying usually (it seemed) when it was driving long distances/hot outside. I re soldered a cracked solder on the main relay and when my boyfriend went to put it back in (he had previously taken the board out of the case cause he couldn't figure out how to get the case loose) it sparked on the board. I tried the car, now it wouldn't start at all.

Replaced the relay with a new one, still won't start.
Replaced fuse with new fuse, still won't start

I thought the next thing would be a bad pump,completely so I replaced the pump, still won't start.

So now I have no clue and I feel like it's some sort of electrical thing considering that before I even messed with the relay it was still working most of the time and just dying in mid drive, but would always start.

When I go to start it up and put it in auxiliary, i don't hear a click or whir of the fuel pump like everything I've read says I should so I feel like it's gotta be something telling the pump to engage that just isn't working.

Would love your thoughts on this. Thanks!

 

I suppose it's possible somehow the ecu got damaged. You should go back over all fuses,, both the ones in the engine bay and the ones in the driver side kickboard to see if they are blown. Use a multimeter to check for continuity.