I just but a H22 auto swap in my sister's 92 prelude and it was fine every think was working great about 2 week after i gave it back to here it quit on her. I when to check it out there no cel so i got her to turn the key on and off a few time and i listen for the fuel pump to kick on and off and nothing. So i pulled the plug on the fuel rail and turned the key on and off and no fuel. I thought it was the fuel pump so i got a fuel pump and befor i put it back in i check and nothing and i checked it with a test light and there was no power getting to the pump. Is there a relay that runs the fuel pump? Any help? I am lost?


Modified by quickv8s10 at 7:54 PM 9/25/2007

 

Yes there is a relay for the fuel pump, called the main relay. It's located underneath the dash. Looks like a little box. If u got some kind of manual that would help cause i'm not that good on explaining exactly where it is cause I got a dc integra and I'm not sure if it's in the same spot for ur lude. Try to search for main relay and see if u can find a picture of it if that helps.

 

Here is where the main relay is located. Try replacing it. If that does not work you could have a wiring issue. Get back to us on results

 

Also check your fuses. One you need to check is called "Backup" and I think its 15A, or maybe 10. It'll be under your dash. I once accidentally pulled that fuse out, wasnt getting spark or fuel. Took me a while to figure out what was wrong.

 

I checked to main relay and its getting power to it but it's doing nothing. i took the cover off and watched it and it's not engaging i stuck a small screw drive in it and manual engaged it and the fuel pump would come on but still would not start so i am sure it needs the main relay. I have check all the part store around here and none of the have them and they can't get them. So do any of you know where i can order one online.

 

Check all of the fuses under the dash. I cant remember what its called, but the same thing happened to me. The car just died while I was driving. I still cant figure out why it did that.

 

Ok i Checked all the fuses and they where all good so i got a new main relay from Honda i replaced it and tried to start the car and nothing. The fuel pump is not priming and there is still no fire. I changed the Dizzy and still nothing. What the hell i am about to pull my hair out. I checked and there it no power at the fuel pump and i am getting power to the dizzy but no spark. When the car first quit when i thought it was the fuel pump i cycled the key a few times and the car started but it quit and after that i have changed all this stuff and nothing.. SOMEONE PLEASE HELP!!!! What could it be or what do i need to check???

 

I also changed the ecu and still nothing...The new relay it not making any sounds and i took the cover off and nothing..


Modified by quickv8s10 at 5:12 AM 9/26/2007

 

ANYONE??? What else do i need to check???

 

???????????????????

 

Does the check engine light come on for a couple seconds then turn off b4 u try and start the car? U also say ur getting no spark? Try thoroughly checking ALL of ur grounds and make sure they're tight.

 

With the JDM H22 ECU The cel light comes on and stays on but very dim. With the h23 ecu i cant remember if it comes on or not but i will check...

 

there is usually a ground beneath the driver's side carpeting where the front of the slide rails bolt onto. Could also be the fuel pump ground itself. Had to pull my hatches fuel pump out and when I did, that thing was so crusted with old gasoline that it prevented the pump from getting ground. took out the bracket and sanded that biatch down.

Maybe you broke the rubber bullet thing that sits on the clutch pedal that lets the ignition know the clutch is engaged.

 

check the ignition wire going to the main relay.. it should turn on and off when you turn the key

 

so your getting no spark and no fuel ?

When u checked for power to the fuel pump where you KOEO or cranking ?

Does the car crank normally ?

Does fuel pump never prime or sometimes ? Are you building and holding fuel pressure ? Do you have voltage at the injectors ?

 

I found the trouble one of the wires at the ground on the t-sat was broke after i grounded it every thing was fine...