This is the removal and installation of an idle air control sensor on a 2002 Mitsubishi galant. In many cases these sensors can be cleaned a couple times before needing full replacement. Either way you want to go, this video shows how fast and simple the removal and installation process is.
Common symptoms of a dirty or faulty IAC valve usually show up at stop lights or stop signs. Yes, rough idles can sometime indicate other issues but as you can see this is a quick and easy starting point.
In this specific case, my rough idle problem ended up being caused by a faulty spark plug boot/wire, however, in many other situations the IAC had noticable carbon buildup. For something so simple to remove / inspect, this is usually where I start when diagnosing idle issues.
Note: Yes, I am aware that the sound quality isn’t great. My mic is junk but the visual is all you really need.
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What size is the screw that holds the iac?
Do you perhaps know if this will fix the following issue? I've got my Galant 2.4 GDI 2002 for like 3 weeks now and I notice that when I hit road and it warms up and I come to a stop de idle RPM dives to like 500rpm and I can feel some heavy engine vibrations when holding the gear shifter (sounds and feels like it almost wants to stall) one time I even got a engine light pop up and it put the engine in like a protection mode (Couldn't go above 2500rpm and had to push the gas pedal all the way down to build up RPM's). It had a full service at 92.000KM and the current mileage is 104.000KM
Hey i have the same car and mine stops running after i let go of the gas.. however if i keep the gas slightly pressed it stays on.. I ordered this part.. do you think this might be the problem ? Thanks
mitsubishi galant 2003 model what is the purpose of water at the throttle valve
So reading your description on the video, you said it ended up being a faulty spark plug? How’d you come to that conclusion. I read the same thing on a forum coincidentally.