hey honda-tech , 2 weeks ago my fuel pump wouldnt start when i will switch the key to stage 2. so i did my researched n read that it cud be the main reply. so i took it out n plugged it back in n sure enuff it was that. so today i wake up to the same problem. i tried unplugged n pluggin the main reply back in n no luck. so i went out to honda dealership and bought a brand spanking new main reply. n still it wasnt that. wth!!!! im going crazy can someone please help me,

 

i think the pump has its own fuse up under the dash.... check that

 

What year Civic? There are three main relay fuses that should be tested. Also check the ground located on the thermostat housing. It should be clean and tight. Does the CEL remain on when the key is turned to ON(II)? If so, pull the codes.

 

its a 1995 egg dx hatchback. and yes the CEL stays. what are the other two main relay fuses?

 

since you already checked your main relay, 1. check if you're getting power to the pump. 2. check your grounds 3. your ecu. i had the same problem with my car not too long ago and the reason my pump randomly work and randomly didn't was because of my ecu.

 

What CEL codes blink when you jump the service connector? Or does it still remain on steady.

Main relay fuses are #18, 24, and 31 (hood).

 

what do u mean 'jump the service connector?'' im not to filimar pulling codes from ecu, to be honest this will be my first time so bare with me.. ok i check all fues under the hood n they seem ok, the numbers ur giving me are those the fuses names? cause im looking at the fuse box on the top left right next to the battery if their any other fuse box that i know know about under the hood?

 

and 1 more question how does the main reply get ground? cause it have to be screwed on where the orginal one is? is that how it gets it ground by gettin conected by that metter plate it hangs by or not?

 

Im not sure if it matters if its bolted up or not, mine hasnt been for a while. But i am also having the same problem as you. Main relay went, i replaced it and the fuel pump wouldnt work. So i hooked it up to a solid 12v source till i fix it. cuz my car is my daily. So im with you looking for an answer..

 

im having the samew problem here bump for solution!!!!!!!!!!!!

 

I had the same problem in my car in my avatar it ended up being the ground connection that runs under the door sill frame came undone when the roll cage was being put in but i also bought the hanes manual at advance and in it, it tells you how you can test to see if there is continuity between everything and also do check to see if you are getting any voltage at the pump its pretty easy as long as you have a tester good luck but check your grounds or you can also take a 12v source n make jumper wires n test your stock pump i ended up putting mine on a switch intil i figured out that it was just my ground