guys..
my accord wont start after head rebuild..put everything back on..turn the ignition to ON position..NO CEL..( i mean CEL did not light up for a few seconds..) fuel pump didnt prime at all..the car still crank but wont start...
I've check all the fuse...change the main relay..still nothing..
tried my ecu on the other car..CEL lights up for a few seconds..( meaning that the ecu is still okay...)

have any of you got any clue what else could be wrong..?

thanks

 

Have you checked all your ground connections? In the engine bay especially?

 

If there is no fuel pump primage, and you have checked all your fuses, relay, and ecu, then it must be the fuel pump itself or the ground wire for the fuel pump has corroded/came loose. that's be the first thing i'd check now.

 

All electrical equipment (sunroof, radio, power window, etc are working fine..so i know that there is no grounding issue..I connected a direct 12v supply from battery to the yellow wire at the pgm-fi main relay (fuel pump power supply) and I can hear and feel the pump alive...so there is no prob with the pump itself..

From what I understand, when you turn the ignition to ON, the CEL should light up a few seconds and the fuel pump will be on for awhile. this indicate that the ecu is okay..but unfortunately this is not the case with my car...

any other thots.??

 

Triple check all connections, fuses, grounds, pins on the ecu harness make sure one or many hasn't worked themselves loose. Good luck

 

remove tube from throttle body get some carb cleaner and spray it in there while cranking make sure you open the butterfly if it starts it is fuel related ...

are you getting spark???

 

finally, the culprit was found. One ground connector was hiding underneath the thermostat housing. Once connected everything was back to normal..

thanks for all your help guys...