Honda and Acura Model Specific Forums

wildoutwhitegsr · 03-29-2006, 08:35 AM

The function of the IACV a.k.a. Idle Air Control Valve is to adjust the idle based upon the amount of air entering the engine, then the computer reacts to this information by adjusting the cars rpm.

Reasons why you should take it apart and clean it:
-High idle after your car warms up
-Lumpy idle
-Roaming idle
-Hunting idle
-Fluctuating idle

Tools Needed:
Ratchet
12mm Socket
Pliers
Brake Cleaner or Simple Green
Paper Towels
A cooled down engine for at least 2 hours

1) Now you got to locate where the IACV is, pop your hood and it’s located directly behind the intake manifold. It’s actually connected to it. Remove your intake and strut tower bar. (If applicable)

2) Place a couple of rags underneath to catch the coolant spill. Loosen the two hoses running to the IACV with your pliers by squeezing the two clips and moving them away from the end, circled in yellow. DO NOT cut the hoses as they are the exact length and you will have to buy new ones if you do.

3) After doing that remove the harness connected to the IACV on the driver side, circle in blue.

4) Then to finally remove it from the intake manifold, remove the two 12mm bolts, circled in red.

Now that the IACV is removed from the intake manifold make sure that you do not lose the rubber gasket as you need this so that it does not leak after you re-install the IACV.

5) Take your brake cleaner or simple green and start to clean up the inside of the IACV by spray inside the two holes. Continue to do this until no more dirty fluid comes out. Should take anywhere from 5 minutes to 15 minutes. This depending on how old and dirty your IACV is. The gasket can be seen in this picture as well.

6) Once you’re done cleaning out the IACV let it air dry. I let it air out for 20 minutes while I did other maintenance on the car.

Now your ready to re-install it back on the car so follow the steps backwards from 5 – 2

Good Luck

This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Honda-Tech!

RaceMyGhost · 03-29-2006, 08:44 AM

nice write up

DC4me · 03-29-2006, 09:39 AM

another nice write up

Slow*Jim · 03-29-2006, 10:44 AM

threads like this should be stickied

ChicagoMike · 03-29-2006, 10:49 AM

Great write up! I do this every now and again just to keep it clean and idleing perfect.

PatrickGSR94 · 03-29-2006, 10:53 AM

hmm I've never done this, 226K miles on car, and I sometimes have a very slight fluctuation up and down from about 650 to 750 rpm. This could fix that?

ChicagoMike · 03-29-2006, 10:56 AM

Quote:

Originally Posted by PatrickGSR94

hmm I've never done this, 226K miles on car, and I sometimes have a very slight fluctuation up and down from about 650 to 750 rpm. This could fix that?

Definately a good place to start!!

It's*BOLO!! · 03-29-2006, 11:39 AM

thanks for the pics man!!!!!!!!

Vu · 03-29-2006, 01:22 PM

Quote:

Originally Posted by PatrickGSR94

hmm I've never done this, 226K miles on car, and I sometimes have a very slight fluctuation up and down from about 650 to 750 rpm. This could fix that?

Would it by any chance fluctuate when the A/C comes on?

Cleaning the IACV worked for me

Lewy. Dee Ayy · 04-29-2006, 06:21 PM

can u rehost the pics?

import810 · 04-30-2006, 11:57 AM

Quote:

Originally Posted by WhiteOut

can u rehost the pics?

x2

96lsintegra · 04-30-2006, 12:27 PM

thanks i going to do this

Lewy. Dee Ayy · 05-02-2006, 08:30 PM

bump for rehost..

kuja · 05-02-2006, 08:58 PM

Quote:

Originally Posted by WhiteOut

bump for rehost..

x2

morocco · 05-03-2006, 12:41 PM

Hey thanks a bunch man. I actually did this today for the first time (on a 103k car) and couldnt believe how dirty it actually was, and as far as I can tell, the rpm fluctuation stopped. Good write up too, all instructions were clear

...rohit · 05-03-2006, 12:49 PM

i want to say thanks too, great write ups man

KillerElfboy · 05-03-2006, 01:21 PM

Can you use throttle body cleaner? and just dump it in the holes,

when ur done, do u just let it air dry or do have to rinse the cleaner out?

wildoutwhitegsr · 05-03-2006, 01:25 PM

Quote:

Originally Posted by KillerElfboy

Can you use throttle body cleaner?

yes

The pics will hopefully be back up soon

KillerElfboy · 05-03-2006, 01:28 PM

i see them fine? i guess they're back?

if thats not the case, open each image in a new tab, thats what i did and they started showing up after a refresh

Jdm Blood · 05-03-2006, 02:40 PM

I clean the IACV and the FITV...new TB gasket...yet it still idle rough. When the car is warmin up...its fine until I gas it alittle then it idle fast...1 to 2. What to do? Also when I unplug the plug to the FITV...it idle fine with the check engine light on.

poorman's type-r · 05-03-2006, 05:39 PM

rehost pic. please.

wildoutwhitegsr · 05-04-2006, 07:32 AM

Quote:

Originally Posted by poorman’s type-r

rehost pic. please.

Your going to have to do what KillerElfboy said for now...

Right click on the pic, properties then copy and paste that link into a new browser. The pics will show up then, until I get more bandwidth.

Jdm Blood · 05-04-2006, 11:23 AM

For those who cant see the pics.

JoePSI · 05-04-2006, 01:03 PM

I took mine off awhile ago and just pressure washed it out. didnt think a how to for this was needed but

. good maint for ur car

wildoutwhitegsr · 05-04-2006, 10:55 PM

Thanks Jdm Blood

03-29-2006, 08:44 AM	#2
RaceMyGhost Join Date: Jun 2005 Location: Valley, CA, USA Posts: 683	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (wildoutwhitegsr) nice write up

03-29-2006, 09:39 AM	#3
DC4me Join Date: Oct 2005 Location: 763 to The Ocho Uno Ocho, CA, USA Posts: 1,147	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (wildoutwhitegsr) another nice write up __________________ FS: Integra parts...PasswordJDM CF intake, LS muffler, 94-97 Usdm Driver side Headlight. (818) http://www.hondamarketplace.com/zerothread/1833709

03-29-2006, 10:49 AM	#5
ChicagoMike Junior Member Join Date: Dec 2005 Location: Tucson/Chicago Posts: 743	Great write up! I do this every now and again just to keep it clean and idleing perfect. __________________ http://civic-eg.com/ 85x89 B series

03-29-2006, 10:53 AM	#6
PatrickGSR94 *PnP Hater Moderator* 1994 Acura Integra Join Date: Jan 2002 Location: Rich Redneck Country, U.S.A. Posts: 25,365	hmm I've never done this, 226K miles on car, and I sometimes have a very slight fluctuation up and down from about 650 to 750 rpm. This could fix that? __________________ Please do not PM me with technical questions. Create a thread in the appropriate forum. H-T OG member #8927 class of '02 ● Koni + GC Install ● HID retrofit club member #0001

03-29-2006, 11:39 AM	#8
It's*BOLO!! Guess whos bizzack Join Date: Feb 2002 Location: US Posts: 5,925	Re: (RippinVTEC) thanks for the pics man!!!!!!!!

04-29-2006, 06:21 PM	#10
Lewy. Dee Ayy Member Join Date: Oct 2005 Location: RCautoworks, ILL, USA Posts: 3,425	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (wildoutwhitegsr) can u rehost the pics? __________________ www.rcautoworks.com Call bob...so he can get it boosted fo ya "I wanna do hoodrat stuff with my friends" Cha-Cha-Chabama!

04-30-2006, 12:27 PM	#12
96lsintegra Join Date: Mar 2006 Location: N Posts: 38	thanks i going to do this

05-02-2006, 08:30 PM	#13
Lewy. Dee Ayy Member Join Date: Oct 2005 Location: RCautoworks, ILL, USA Posts: 3,425	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (wildoutwhitegsr) bump for rehost.. __________________ www.rcautoworks.com Call bob...so he can get it boosted fo ya "I wanna do hoodrat stuff with my friends" Cha-Cha-Chabama!

05-03-2006, 12:41 PM	#15
morocco Join Date: Sep 2005 Location: Worcester, USA Posts: 132	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (kuja) Hey thanks a bunch man. I actually did this today for the first time (on a 103k car) and couldnt believe how dirty it actually was, and as far as I can tell, the rpm fluctuation stopped. Good write up too, all instructions were clear __________________ Anthony "Mac Daddy Ant" Morocco

05-03-2006, 12:49 PM	#16
...rohit Member Join Date: Nov 2001 Location: Germantown, MD, USA Posts: 1,896	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (morocco) i want to say thanks too, great write ups man __________________ http://is.rely.net/1-92-29999-l-fB0G...ln5q4yPjlA.gif I <3 INDIA.

05-03-2006, 01:21 PM	#17
KillerElfboy Junior Member Join Date: Apr 2005 Posts: 502	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (rohit) Can you use throttle body cleaner? and just dump it in the holes, when ur done, do u just let it air dry or do have to rinse the cleaner out? __________________ 1991 Integra RS with 287k

05-03-2006, 01:28 PM	#19
KillerElfboy Junior Member Join Date: Apr 2005 Posts: 502	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (wildoutwhitegsr) i see them fine? i guess they're back? if thats not the case, open each image in a new tab, thats what i did and they started showing up after a refresh __________________ 1991 Integra RS with 287k

05-03-2006, 02:40 PM	#20
Jdm Blood Junior Member Join Date: Aug 2005 Location: Drift City, CA, OC Posts: 74	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (KillerElfboy) I clean the IACV and the FITV...new TB gasket...yet it still idle rough. When the car is warmin up...its fine until I gas it alittle then it idle fast...1 to 2. What to do? Also when I unplug the plug to the FITV...it idle fine with the check engine light on. __________________ 1989 Toyota Supra 1991 Honda Crx SI 1990 4dr Integra GS 1992 2dr Integra LS 1991 2dr Integra RS 1989 Honda Crx HF 1992 Nissan 240sx 1989 Honda Crx SIR DA Squad #413

05-03-2006, 05:39 PM	#21
poorman's type-r * B A N N E D * Join Date: Oct 2005 Location: MiD_WeST Posts: 1,072	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (wildoutwhitegsr) rehost pic. please.

05-04-2006, 11:23 AM	#23
Jdm Blood Junior Member Join Date: Aug 2005 Location: Drift City, CA, OC Posts: 74	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve For those who cant see the pics. __________________ 1989 Toyota Supra 1991 Honda Crx SI 1990 4dr Integra GS 1992 2dr Integra LS 1991 2dr Integra RS 1989 Honda Crx HF 1992 Nissan 240sx 1989 Honda Crx SIR DA Squad #413

05-04-2006, 01:03 PM	#24
JoePSI Member Join Date: Jan 2005 Location: NW, FL, USA Posts: 2,002	Re: How-To Clean Your IACV a.k.a. Idle Air Control Valve (Jdm Blood) I took mine off awhile ago and just pressure washed it out. didnt think a how to for this was needed but . good maint for ur car __________________ Roll Tide! Past: DC2 - 380hp/256tq - Gone Current: Chevy OBS RCLB - 5.7L 4x4 -- 3'' RCX Lift -- 33'' tires

05-04-2006, 10:55 PM	#25
wildoutwhitegsr Junior Member Join Date: Dec 2005 Location: Whitby, Ontario, Canada Posts: 361	Thanks Jdm Blood __________________ "Spooning Leads to Forking"

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search