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d15b1 won't start after a while

Discussion in 'Civic and CRX - EF' started by crxpower24, Sep 24, 2013.

  1. crxpower24

    crxpower24 Member

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    Ok so my lil b1 starts when its cold n runs perfect bt after a lil bit ill die n won't turn on again and it shows the check engine light i took it to auto zone to see if they can tell me what is it but they told me its to old so i dont have any clue what can it be plz help
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    ?

    main relay
    injectors
    plug wires
    distributor
    ECU
    ignition switch
    fuel pump
    blinker fluid
    starter solenoid
    map sensor
    muffler bearings

    Take it to a real mechanic? Your question is like asking "I can't remember a specific word that I saw in the dictionary, tell me what it is?"
     
  3. crxpower24

    crxpower24 Member

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    I did and they told me the same they can't find the problem or plug in the computer cuz its old
     
  4. jlicrx

    jlicrx Senior Member

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    pull back the carpet/floor mat in the passenger side footwell to expose the ECU - turn the key on and you should see a flashing red LED on top of the ECU - count the number of times it flashes between pauses and that is the code - could have more than one code
     
  5. crxpower24

    crxpower24 Member

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    Does the blinking stop after it a wile
     
  6. FLounder

    FLounder power hungry VIP

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    he left out one important detail, you have to jump the service connector to get the ecu to blink the code.

    google that shit man! I bet you can find a video or pictures or both of how to get the codes from your old rex.
     
  7. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Going to AutoZone is not taking it to a "real mechanic." Not even close. A "real mechanic" should know how to pull the code on an old Honda. It's in practically every service manual ever written for the damn things.
     
  8. Fernpatch

    Fernpatch Member

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    d15b1= obd0 ecu. Pull back the carpet on the passenger side. There should be a metal plate bolted to the floor that covers the ecu. Look towards the middle upper area of the plate and there should be a window about the size of a quarter. Turn the key on and observe the led flashes that you can see through said window. There is no need to jumper a obd0 ecu to get codes.

    My expectation is you will find a code 16 fuel system error. Code 16 is normally caused by a bad injector that goes out of spec when warm.

    If you do end up finding the injectors are bad I would recommend replacing the entire throttle body as a unit if possible. It is much easier than trying to replace just the injectors.

    As a side note the b1 and b2 throttle bodies are different bore size so be careful when finding a replacement.
     
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