Today I was going to start my k20a2 swap with a hybrid racing harness. The fuel pump primed and I started it no problem. I turned it off and went to turn it back on again and the fuel puitp didnt prime. Also, the check engine light no longer showed up. Is it the main relay? Any fuses I should check? I already checked the "ecu" fuse in the black fuse box

 

**** it could be but if it worked fine before i dont see that happening your sure the grounds are good

 

Yea I have real good grounds. Also, the relay no longer clicks like it used to

 

Check the ecu fuse, are you useing kpro? My fuel pump will not run without k pro

 

Also I would test the main relay

 

I checked the ecu fuse, I'm using a prb with an immobilizer box. How do I check the main relay?

 

the process to test main relay is in chinton repair manual or can find on google I would post a link but I'm on my cell phone!

 

99% sure it's your relay had a similar problem with my car check if your getting spark

 

If relay doesn't click anymore then its no good just make sure its getting good power and ground.

 

kick the relay a little to see if it is just the solder joints giving out after 20 years of existence.



Then kick yourself if you've replaced anything before trying this, if it works.

 

Main relays are problematic like that. I pack a spare in all of my cars any more

Pretty easy to pull out and check, doesn't cost you much either.

 

Replaced main relay. Got fuel pump to switch on, but engine will no longer start. Hybrid racing has not helped. Any ideas?