so recently my car wouldn't start, it ran great one day and the next day I came out and it wouldn't start... so I check and I have fuel but no spark. I notice when I crank it over the rpm gauge doesn't move when the car is cranking so I replace the engine speed sensor, still no start. weird thing is when I take out the 409 relay, from what I understand that's the fuel pump relay, obviously I get no fuel but it start to spark just fine like it should. when the relay is in I get no spark. does anyone have any idea why this could be?