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    legendary20x's Avatar
    legendary20x Posts: 3, Reputation: 1
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    #1

    Feb 15, 2010, 02:24 PM
    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
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Feb 15, 2010, 02:54 PM

    The hose from the MAP Sensor goes to the smaller tube opening, while the evaporative canister hose goes to the larger opening.
    legendary20x's Avatar
    legendary20x Posts: 3, Reputation: 1
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    #3

    Feb 19, 2010, 02:54 PM
    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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