obastable

After reading through 15+ pages of other peoples posts, I know I'm bringing up a redundant topic. Thanks to those posts I know (in theory) what I'm looking for this weekend ... but I was wondering if I posted a video (with audio) of the spontaneous revving if it'd help one of you car savvy people figure out what was causing it?

I read about the IACV (Idle Air Control Valve), vacuum leaks, fast idle stuff, and throttle position sensors. It's nice to know the IACV is on the back on the intake manifold, but I honestly don't know what an intake manifold is so ... I'm lost.

If I take a pic of my engine could someone maybe put like lines and words (you know, like "This is your manifold, you idiot" with a red arrow).

I really do want to learn how do this myself, a manual would be handy but I can't afford one right now (got fired for missing too much work due to medical issues). Any guidance you can offer is greatly appreciated! In the meantime I'm going to try to find some pics or specs for my car.

D.T.P

Going by your profile, ill assume you have a 96 civic? Well ok, when you open your hood, you see the engine, should say honda right on top of it (the valve cover which is black). Now look right above it. You will see a silver cast manifold with 4 tubes going towards the interior of the car. That cast silver manifold is the intake manifold. Depending on which engine you have, it will have a black rubber intake pipe either from the side or from the top connected to it.

I'm on my phone, maybe later when I get to a pc ill post some pictures.

2drcivic

Dude, what exactly are the problems you are experiencing??....I am having an idle issue currently as well.... I don't know much, lol but I know where the intake manifold is.... Best thing to do is google image "civic intake manifold" trust me you will then know exactly what your intake manifold is!

rick10

this is not something I would do myself , if i dont even know where the intake is.. The only reason for that is that in order to remove your IACV you need to remove the throtle body . If i remember correctly there are 4 screws holding the IACV ( for the ek model) , the two on top are easy to remove,however the bottom can be a pain in the butt, there is almost no way to get to them unless you start removing things of your car like TB, air intake and maybe the front strut if you have one

this is what it should look like




I had a DYI on how to remove the IACV for the EK model , let me see if i can find it and post it here. I tried doing this a long time ago , and it was a mess, mainly because the screws at TB were so hard to remove , i apply so much force and nothing , so before I started breaking up screws I decided to stop.

Instead I used a carb cleaner to clean inside the throtle body which was easy enough and it did improve my idling.

chris_v2

To remove and clean the IACV.

Remove the 2 12mm bolts holding it in, line the two coolant hoses and harness connector attached, pull the IACV towards the firewall, and fill it up with throttle body cleaner, let it sit for awhile, then remove all the cleaner, repeat until the valve/ screen looks clean.

Make sure you re-install the 8-shape seal on the valve before re-assembly as well.

rick10

hey chris isnt different for the D16Y7 ? ... I remember that there were 2 screws at the bottom of the IACV. I even remember that it was almost impossible to get the rachet there.

Unless i was trying to remove something different , but I also remember reading of people complaining about that in the D16Y7

I m confused now if i was removing the right part...

D.T.P

It will be silly tight, use a box end wrench instead of a ratchet.

My old 92 DA integra wasn't any easier.