i got a 92 si and i just put in a gsr b18c motor in it.
heres the problem.....
when i try to start my car it wont start
the main relay starts making hella noise and wont power the fuel pump
i bout a new relay n it does the same thing..
it just makes hella noise n wont power the fuel pump to send fuel to my car
is it the main relay or something else???

 

This happened to me a while back... It was my transmission ground. Take your grounds off and clean them up real good.

 

yea do what he sad and check your grounds. most likely it is. but then i would take a volt meter and check the fuel pump. but good luck

 

Yeah, also check the ground on the thermostat housing.

 

If this thread continues because you're not finding the problem, be sure and listen to this ^^ guy... he knows his ****. He helped me on my last electrical problem. Good luck man