the fuel pump won't prime sometimes I hear the main relay click when it's in the on position but no fuel pump then sometimes it will prime and no problems runs great need help thank you

 

Sorry it's a 93 civic ex no mods thanks

 

Sounds like a crack in the relay solder. change the fuel pump relay and try again

 

I resodered the relay I think it maybe the ecu bc once it starts it runs great

 

the fuel pump has a delay to prime sometimes. I hear the main relay click when it's in the on position but no fuel pump then sometimes it will prime and no problems runs great need help thank you

 

i just had this same problem. main relay went bad (cracked solder) replaced. still wouldn't start, so i opened the ecu and that was bad as well. so i had to replace both the main relay and ecu, now starts every time

 

Where did u get a new ecu from? And did it work fine when it was warm?

 

knew a local guy that tunes ecus in my area and he sold me one. works fine warm or cold

 

You in fl by chance lol

 

yes i am, central fl to be exact.

 

phearable.net

 

New ecu fixed the problem thanks