bad idle in civic

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enasnIDX

Junior Member
my shitty little D15 in my 94 civic idles bad when it isn't warmed up for a while. It revs up a little and drops continuously. Anyone with an idea what's wrong?
 
throttle positioning sensor, intake gasket, throttle body gasket, adjustment on throttle body bolt(it sometimes becomes loose).

Trial and error dude.
 
check the idle air control valve on the intake manifold. if you unplug it your idle should drop and if it stops fluctuating then that is it. it will throw a code tho so you gotta clear it afterwords.
 
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