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-   -   93 honda civic constant high idle 4500 rpms (https://www.askmehelpdesk.com/showthread.php?t=447416)

  • Feb 15, 2010, 02:24 PM
    legendary20x
    93 honda civic constant high idle 4500 rpms
    Hi, I have a 93 honda civic with a constant high idle. It idles at 4500 rpms then will drop to 2500 as it heats up I have change the idle air control and the map sensor but nothing. However when I cover up one of the holes in the throttle body (because I have two I don't know if its normal) the idle drops to 1000 but when I step on the gas it drop first before it goes up I'm not sure what to do at this point. Any help is appreiciated . Thanks
  • Feb 15, 2010, 02:54 PM
    TxGreaseMonkey

    The hose from the MAP Sensor goes to the smaller tube opening, while the evaporative canister hose goes to the larger opening.
  • Feb 19, 2010, 02:54 PM
    legendary20x
    Quote:

    Originally Posted by TxGreaseMonkey View Post
    The hose from the MAP Sensor goes to the smaller tube opening, while the evaporative cannister hose goes to the larger opening.


    I checked and every those cables are like that but it still idles high

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