Question about 1990 Honda Civic

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I990 honda civic

Car is reving up and down code says 14 witch is eacv i canged it no cange

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  • bulletbob157 Mar 03, 2009

    the idle revs up and down when in neutral. replaced the intake manifold worked fine for a couple of days same thing happened. sounds like i have a vacumn leak but cant find the problem. please help

  • John Husman May 11, 2010

    did you check the throttle position sensor?

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Theres alot of things that can cause this condition one is( TPS ) second is (IAC) idle air control valve wich can cause surging problems your pulling #14 code check for broken or cracked vacuum lines listen for hissing this wont show as a code unless a scanners hooked up so you can watch the increases and decreases on the engine

Posted on Sep 13, 2008

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