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  1. #1
    Newcomer Array
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    Sydney
    Car:
    Civic / Crx

    Exclamation EG Civic B18C. No start - No Power at Fuel Pump, Main Relay OK.

    Hi everyone,
    Not having much luck with my Honda's at the moment with both my cars not running.
    My Civic cranks, but does not start. I have spark, but i cannot hear the fuel pump priming when I turn on the ignition. I have tried searching about this problem and everyone else seems to have problems with the main relay, but the main relay is OK, i can hear it clicking (2 separate clicks) and have checked for power there etc, but there is no power getting to the fuel pump... anyone have any ideas where to go from here?

  2. #2
    Member Array
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    Apr 2009
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    South West Sydney
    Car:
    DC1 Integra. Yh
    So it's not cranking ? Have you tried puming the fuel a little then starting ? Also if there is nothing with the relays and ignition, get a rubber mallet and whack the alternator a few times. May give it a crack. Try those things and see how you go. If not get it to a local mechanic that way they can tell you what's giong on if you can't :P

  3. #3
    Newcomer Array
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    Apr 2014
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    Sydney
    Car:
    Civic / Crx
    Thanks for the reply mate, the car cranks fine. Battery, starter, alternator etc is all OK. It is just the fuel pump not getting power. When I crank the car, there is no 12v at the fuel pump plug. I was hoping someone else may have had this problem before with the fuel pump not getting power and the main relay still working.

  4. #4
    Member Array
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    Jun 2005
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    syd
    Car:
    560hp
    make sure there is power going out of the relay.

  5. #5
    lol whack the alternator... that's a new one

    Get a diagram of the main relay and test power going in and out

  6. #6
    Newcomer Array
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    Apr 2014
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    Yeah, I have checked pretty much everything I can at the main relay, power in/out, grounds etc, even bridged the 2 terminals by-passing the relay all together and still no power at the fuel pump, so I am fairly confident the problem lies elsewhere, but unsure where to start checking next...

  7. #7
    Member Array
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    Mar 2004
    Location
    Melbourne
    Car:
    Poo-goat 307
    A main relay can still click even if its damaged/broken. Check the output terminal on the main fuel relay to see if there is power output. If there is, then the problem is further down the line between the relay and fuel pump.
    Should have 12v+ power from terminal 7 when on START

    [IMG] http://honda-tech.com/showthread.php?t=2972245 [IMG]
    Last edited by ACTI0NMAN-1; 06-05-2014 at 12:18 PM.

  8. #8
    Newcomer Array
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    Thanks for that mate, but i have checked everything at the main relay and everything seems good from there. I'm unsure of where to check after that, like you said between the relay and the pump. There is a bit of a mess of wires under the dash, i am guessing because of the conversion, so it makes it a bit hard to follow the wires...

  9. #9
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    Dec 2011
    Location
    Launceston, Tas
    Car:
    '77 Civic
    Quote Originally Posted by dorikin View Post
    lol whack the alternator... that's a new one

    Get a diagram of the main relay and test power going in and out
    I thought it was whack the starter motor?

    Have you checked the wires to the fuel pump? done some multimeter jabbing from relay end to pumpish end, and see if there is anything blocking (ie, short)? Could tell you if the wire got crushed or something

  10. #10
    Member Array
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    Nov 2004
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    Manly Yo
    Car:
    ED/EG5/EP3/JAZZ
    Don't hit your alternator with a rubber mallet or anything else for that matter! no mallet impact could/would ever help with worn alternator brushes.
    As Drifter mentioned , Its the starter motor on its way out you can tap with a rubber mallet or something handy to unstick and get going again but only in emergencies with no other options!

    Sounds like a hack job conversion if you've got wires willy nilly lol

    If you can't track the wires back maybe trip the ECU error checking and see what code shows up

    How to
    http://wantyoutoknow.wordpress.com/2...6/hello-world/

    http://honda-tech.com/showthread.php?t=1901557

    http://youtu.be/-p5FmwGbxeE

    Codes
    http://www.askmehelpdesk.com/cars-tr...das-18139.html
    161.4KW ATW Tuned By TODA
    EG5 JDM B16A SiR-II TURBO

    13.28@106.6mph 2.117 60ft On RE001

  11. #11
    Member Array
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    Apr 2009
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    South West Sydney
    Car:
    DC1 Integra. Yh
    Quote Originally Posted by Lukezen27 View Post
    Don't hit your alternator with a rubber mallet or anything else for that matter! no mallet impact could/would ever help with worn alternator brushes.
    As Drifter mentioned , Its the starter motor on its way out you can tap with a rubber mallet or something handy to unstick and get going again but only in emergencies with no other options!

    Sounds like a hack job conversion if you've got wires willy nilly lol

    If you can't track the wires back maybe trip the ECU error checking and see what code shows up

    How to
    http://wantyoutoknow.wordpress.com/2...6/hello-world/

    http://honda-tech.com/showthread.php?t=1901557

    http://youtu.be/-p5FmwGbxeE

    Codes
    http://www.askmehelpdesk.com/cars-tr...das-18139.html
    Thats what I meant got mixed up lol but yes give v that a try!

  12. #12
    Green block gangster Array
    Join Date
    May 2004
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    twin GX160's
    Quote Originally Posted by TheNightKid View Post
    Thanks for that mate, but i have checked everything at the main relay and everything seems good from there. I'm unsure of where to check after that, like you said between the relay and the pump. There is a bit of a mess of wires under the dash, i am guessing because of the conversion, so it makes it a bit hard to follow the wires...

    What ECU are you running ? OBDI, OBDIIA ?

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