>"Randolph"
>> Sam Cormier wrote:
> > Hi guys I have a 99 Civic and in the winter only it will idle
> > really low after driving for over 10 minutes. When I stop at
> > a red light it even stalled 3 times last winter. It never happens
> > in the summer though... only in the winter.
>
> I have the same problem with my '94 Civic. The colder it is the lower
> the idle speed (after warm-up that is). I don't know of a real fix, but
> turning on the headlights seems to bump up the idle

AFIK, two things: The EACV may need cleaning/broken, or the signal required
to tell the ECU that tells the EACV is inactive. Another words, the ECU gets
a message from sensors but ECU ignores message and won't response to the low
idle's request. However, the ELD circuit appears functional.

This might require troubleshooting the EACV, ECU, or sensors. Unless you
have proper tools, I would suggest cleaning it or tap on it and see if it
budges.