My Integra is a swap gsr on an LS. it got shut down system electrical stuff.
For example. the battery still had power but all the electrical in the car doesnt seem to go on. SO i waited for like 5min and it come back.
And then there was this other time where i start the engine and it start and rpm rise and when it got back down it drop and shut down. some time the engine wont turn on for like 10min. I have to wait and keep trying.

I asked the mechanic about this situation and they say is the main relay and I went and got it replace and it still doing it, but it even worse than the main relay before so I went back and change it back to the old main relay before. SO therefore the car still shutting, god know when it will strike again.

Any ideas wat could be wrong>?