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Thread: 03/04 Honda Civic idle/pump/intake issues

  1. #1
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    03/04 Honda Civic idle/pump/intake issues

    hey guys

    Just completed replacing the motor in the old ladies 04 honda civic LX with a 03 honda motor(big thanks to STUIEZ and my Cuz Glenn). Since then 2 codes have popped up:

    1: P0507 - IAC higher then expected RPMs

    2: P2279 - Intake manifold leak

    Also every so often when the AC pump wants the cycle it makes one hell of a noise(like belt moving... pump not).

    Sooo first question is, If I just get a belt that doesn't connect to the AC pump will the computer through some codes at me... or will it be fine with not cycling the pump?

    Second question, How do I find an intake mainifold leak?

    Thirdly, what would cause the IAC do have higher then expected RPMs?


    Thanks

    Colin

  2. #2
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    you can get a short belt for a/c delete cars, it won't trigger a code.
    as for intake leak-that will cause high idle. therefore your idle air control valve trips the code. if you have some brake cleaner/ carb cleaner with a tube and spray around vacuum lines, intake gasket, throttle body gasket. if the idle changes that will point you to the location of your leak.
    did you transfer the intake with the motor or use your original?

  3. #3
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    I forgot to mention, check for the vacuum leak with the car idling and engine warmed up.
    I'm sure you figured that anyway.

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