The Injen cold air intake will work if you drive through a puddle as long as you don't let off the gas.
The intake air temperature sensor on a 1991 Honda Civic is found on the intake. The intake air temperature reads to climate of the air that is being sucked in through to the engine.
The intake air temperature sensor on a 2007 Honda Civic is found inside the intake system. The sensor is placed near the air filter box.
Idle on a 1985 Honda Civic is adjusted through a idle air control valve. This valve is located near the intake. Adjust the valve by either loosen or tightening it.
http://www.autosparepartsusa.com/Getsubcatsearch.aspx?modelid=6013&catid=240497&catname=Air*naas*IntakeGet Your Air Intake Civic parts here
there are five sensors on a Honda civic intake three are on the passenger side top the others are on the middle and drivers side of the bottom
on the intake manifold.
The vacuum hose on the civic is going to be to the left of the intake manifold.
In the back of the intake manifold on a d16z6 and on a d16y8 it should be on the air intake arm.
its on the firewall above the intake manifold
Close to the Intake Manifold
IT is a Intake Air Temperature sensor
Install a AEM air intake.