Alright, so my friend recently got his ef back from a swap, ran fine for a good week or 2, then all of a sudden he goes to start it one morning, and nothing, it sounds like the motor cranks over maybe 1 time, then dies like theres no power, although the battery is fine, it wont jump start, the clock is dim, and the stereo lights up for a second then dies, again like the battery's dead.

checked all fuses, and all grounds seem fine. any suggestions where to check next would be appreciated. thanks

 

ignition switch and then main relay. Main relay makes more sense.. but ignition switch could also cause weird behavior like that.

 

thanks for the response, ill check that out and post an update

 

Have you tested the alternator or done a draw test on the battery?