Fuel Pump not priming, But Main relay clicks!
 

OK, so first off its a 96 civic hatchback w/ a b20vtec swap. Here's everything i've check'd;

-ecu fuse check'd
-dizzy new
-spark good
-timing good
-fuel pump replaced
-fuel pump fuse (good)
-main relay replaced
-ground wires checked
-no check engine light

-no power to fuel pump * not sure how to fix*

whats causing me to get no power to my fuel pump but im hearing my main relay click when started?!?!? im stump'd!!!

Re: Fuel Pump not priming, But Main relay clicks! (SpoonEk253)
 

i've search'd but no answer to my problem!

WHOAA.. i have the SAME EXACT problem but cant figure it out

r u sure ur car has gas?? and did it happen suddenly?? i ran over a bump and my car just lost ALL power

Re: (muhaMan)
 

yea i have a half tank...my car use to start up no problem. and now the fuel pump wont even work!

Re: (SpoonEk253)
 

run direct power to your pump and see if it starts to prime if not you may have a blown pump if it does maybe a bad connection or ground i had a killswitch and if the wires cane off the switch it would just click also check your fuses as they may also be a culprit

Re: (Jhonny Ricer)
 

i've tried running it direct it works just fine...what fuse's would i check and ground wires?


Modified by SpoonEk253 at 9:44 PM 3/29/2007

Re: (SpoonEk253)
 

check all your fuses it could be more than one and the ground i believe is attached to the frame of your car near the driver side seat just follow it from the pump see where it brings you https://honda-tech.com/forums/images/smilies/emthup.gif

Re: (Jhonny Ricer)
 

i'll get back to you on all that tomorrow...thanks!

????

Re: Fuel Pump not priming, But Main relay clicks! (SpoonEk253)
 

Anybody want to give the technical term for a main relay? Whats it listed as on the fuse box cover. Just wondering because I'm having the exact same problem.

Re: Fuel Pump not priming, But Main relay clicks! (SpoonEk253)
 

There are two relay's inside the main relay. At first I was thinking that perhaps the one that supplies battery voltage to the fuel pump isn't being triggered by the ECU. OBD2 Civic's used A16 but I do know some Integra's used A15. So I was going to ask which ECU you're using, but you said the car has been running with its current setup (correct?).

Since you've replaced damn near everything in the chain, you need a meter (and Helms) to start finding where the voltage disappeared.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lledcomp &raquo;</TD></TR><TR><TD CLASS="quote">Anybody want to give the technical term for a main relay? Whats it listed as on the fuse box cover. Just wondering because I'm having the exact same problem.</TD></TR></TABLE>

It's a relay...not a fuse.

Re: Fuel Pump not priming, But Main relay clicks! (EE_Chris)
 

Ok better question. Where is the main relay located at on the car?

Just because the main fuel relay clicks doesn't mean it's working properly. Pull it out and check it.

Re: Fuel Pump not priming, But Main relay clicks! (SpoonEk253)
 

im using a obd1 gsr ecu

Re: (civicseth)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicseth &raquo;</TD></TR><TR><TD CLASS="quote">Just because the main fuel relay clicks doesn't mean it's working properly. Pull it out and check it.</TD></TR></TABLE>
yea but he stated it primes with direct power from the battery so its obviously working just fine its either a prob with a relay to the pump https://honda-tech.com/forums/images...s/emsmilep.gif

Re: (Jhonny Ricer)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jhonny Ricer &raquo;</TD></TR><TR><TD CLASS="quote">
yea but he stated it primes with direct power from the battery so its obviously working just fine its either a prob with a relay to the pump https://honda-tech.com/forums/images...s/emsmilep.gif </TD></TR></TABLE>

That doesn't mean too much, when he supplied the fuel pump w/ direct power he overrode the relay, that's not saying the relay works when you go around it.

Re: (Syndacate)
 

nvm the problem is still there...grRRr this is BULL$hit. But i do gotta new main relay, not sure why it still doesnt work right!


Modified by SpoonEk253 at 7:14 PM 4/1/2007

Re: (SpoonEk253)
 

ttt

Re: (SpoonEk253)
 

Check your ground on your thermostat housing. Other than that it sounds like you checked everything except your ecu. I had the exact probelm and it turned out my ecu went bad.

Re: (93FlatBlackHatch)
 

DAMN I HOPE IT NOT MY ECU, MORE MONEY DOWN THE DRAIN! HAHA I'll CLEAN THAT SURFACE FOR THE THERMOSTAT GROUND! https://honda-tech.com/forums/images/smilies/emthup.gif

Re: (SpoonEk253)
 

i had the same problem before and was that i had some + and - wires were touching that were extended for tucking.

Re: (jorgie583)
 

i dont gotta any extended wires...harness is still untouched

Re: (SpoonEk253)
 

2deetop

i have the same damn problem same motor, is it still not workin or just soemtimes?

Re: (19992civichatch)
 

not working at all...it use to work but after its been sittin for a while and i've removed the wiring harnes and fuse box to do some repainting in the engine bay. everything else is fine but the fuel pump doesnt want to work?!?!?!