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swaped ek fuel pump not coming on need help

Discussion in 'Civic and del Sol - EG and EK' started by isaacson06, Sep 3, 2007.

  1. isaacson06

    isaacson06 New Member

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    ok i got a 98 ek civic hatch and i swaped in a b20z and turbod it the wiring was done at rywire and its been running good for the pasted month and then today it was like 90* out and i went to a car show and i was leaving and getting ready to get on the highway and i let off the gas and the car dies and i was like wtf so i try to restart it and it turns over fine but theres no fuel pump the pump doesnt come on so i came home and got my stock fuel pump that i know its good and put it in on the side of the road and still the pump is not coming on so i towe it home. now im here waiting for the smart people to tell me whats wrong with it the only thing i can think of is the main relay but it clickes but some people say its suppost to click 2 times but mine only clicks 1 time. help me plezzzzzzzzzzz
     
  2. humblegumbo

    humblegumbo 1595cc's of Mad Fury

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    Shot in the dark: try replacing the main relay.
     

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  3. eg6sir

    eg6sir Supa Mod Moderator VIP

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    +1
     
  4. killercannible

    killercannible Senior Member

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    Car would not crank if the main relay blew, nothing would work hence why it is called the main relay.:rolleyes:
     
  5. humblegumbo

    humblegumbo 1595cc's of Mad Fury

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    From About>Autos>Auto Repair> Troubleshooting> Honda Main Relays
    Before we diagnose a no-start, let's look at how Honda's main relay works. The relay is a dual relay, that is to say that it is two relays in one. The first relay powers up the computer and supplies power for the second relay. Once the computer is powered up, it will ground the second relay, which supplies power to the fuel pump. There are three conditions that will cause the computer to activate the fuel-pump half of the main relay:
    • When the key is turned on, the computer will run the fuel pump for two seconds.
    • When the starter is engaged.
    • When there is a tach signal to the computer.
    So when it clicks once, thats the computer and everything else running...the second click is the fuel pump. Therefore it's possible for the car to crank but not start if the fuel pump 1/2 of the main relay is bad. Which is exactly what it sounds like he's describing.

    How To Replace A Honda Main Relay

    :cool:
     
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