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crsexy · 06-28-2008, 09:46 PM

Would the main relay have something to do with my ecu throwing a fuel injector code? I just replaced my main injector in my DX but still getting a injector code. Any ideas?? Also every once in a while it wont start for about 5-10 key cycles and then it will fire right up.

dacheat · 06-29-2008, 01:52 AM

what is a main injector? or do you mean you replaced your main relay?

whiterabbit06 · 06-29-2008, 07:49 AM

Cars with Dual Port Fuel Injection (DPFI) have two injectors a main one and an auxillary.

Justin91civic · 06-30-2008, 10:35 AM

The main relay on that year of a honda with dpfi controls the fuel pump along with sending power to the injectors. If you are having problems starting up the car then either replace the relay or if you have a helms manuall it will tell you how to test out that relay.

YBLEGAL · 06-30-2008, 12:33 PM

It is possible it's the main relay. Also check the resistance across the 2 leads of each fuel injector. I forget off hand what the resistance nominally should be, but haynes or helms or a chilton should say.

06-28-2008, 09:46 PM	#1
crsexy Junior Member Join Date: Jun 2008 Posts: 11 iTrader: 0 / 0% Rep Power: 3	Main relay question Would the main relay have something to do with my ecu throwing a fuel injector code? I just replaced my main injector in my DX but still getting a injector code. Any ideas?? Also every once in a while it wont start for about 5-10 key cycles and then it will fire right up.

06-29-2008, 01:52 AM	#2
dacheat ..is grounded. Join Date: Jul 2007 Location: strongbadia Posts: 3,776 iTrader: 4 / 100% Ride: '84 buick (rusted) Rep Power: 257	what is a main injector? or do you mean you replaced your main relay? __________________ marco....

06-30-2008, 12:33 PM	#5
YBLEGAL Regular Member w/ Cheese Join Date: Aug 2006 Location: NW Indiana Posts: 2,746 iTrader: 0 / 0% Ride: 2000 EJ8 w/ SiR-II Rep Power: 72	It is possible it's the main relay. Also check the resistance across the 2 leads of each fuel injector. I forget off hand what the resistance nominally should be, but haynes or helms or a chilton should say. __________________ YBLEGAL.NET → Profile • Projects • Parts For Sale → Steel Braided Brake Lines • Front Camber Kit (Price Drop) • Manual Brake Pedal

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06-30-2008, 10:35 AM	#4
Justin91civic Member Join Date: May 2008 Location: Nashville, Tn Posts: 88 iTrader: 0 / 0% Ride: 91 civic DX Rep Power: 5	The main relay on that year of a honda with dpfi controls the fuel pump along with sending power to the injectors. If you are having problems starting up the car then either replace the relay or if you have a helms manuall it will tell you how to test out that relay.

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Main relay question