Hi, I have a 95 mustang GT 5.0 car won't start, just cranks till battery dies or I give up,
sometimes dead battery is jump started and it starts, works fine for a few days weeks or months then won't start again. thought at first maybe fuel pump but when key is turned on I here the fuel pump run 2 sec thought pump may be ok so instead replaced fuel filter, car worked great few months thought cool, but again won't start, this time checked coil and plug wires to see if any spark. (NO SPARK) replaced power pack. car starts now I think I have it licked, some time goes by and same thing. so I replace the ignition module. car works great again for a time then again the problem starts.
So now I am sitting in parking lot after work car won't start O degrees out side great here we go again, this time I turn key and here pump run 2 seconds then crank engine
not starting, this time I left key to the on position by accident, I'm calling for a ride home, then I here a sound from the fuel pump like the two second sound that I here at first crank, I turn key to crank engine and it starts, so every time this problem starts to happen this my new procedure. (sit wait for sound of pump w/key to on position) now that I have this info I talk to a mechanic and he says I should try to replace the pump relay and the main ECU relay. He thinks one of the relays are hanging up. what are your thoughts, fustrated in Chicago