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Main relay question

Discussion in 'Civic and CRX - EF' started by crsexy, Jun 28, 2008.

  1. crsexy

    crsexy New Member

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    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.
     
  2. dacheat

    dacheat ..is grounded.

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    what is a main injector? or do you mean you replaced your main relay?
     
  3. whiterabbit06

    whiterabbit06 Why oh why didn't I take the blue pill? VIP

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    Cars with Dual Port Fuel Injection (DPFI) have two injectors a main one and an auxillary.
     
  4. Justin91civic

    Justin91civic New Member

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    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.
     
  5. YBLEGAL

    YBLEGAL Regular Member w/ Cheese

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    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.
     
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