IAC Valve Cleaning Guide w/pics - Club RSX Message Board
Go Back   Club RSX Message Board > GENERAL RSX > Problems & Solutions RSX
Use the same user name on Club RSX, Club EP3, and Club ILX!

Reply
 
Thread Tools
Old 07-07-2005, 08:21 PM   #1
soccerman002
Fix it 'til it's broken
 
soccerman002's Avatar
 
Join Date: Jun 2003
Location: Chesapeake, VA
Posts: 12,041
iTrader: (7)
soccerman002 is an unknown quantity on c-rsx
IAC Valve Cleaning Guide w/pics

I figured that this would be something worthwhile to add to the boards, considering a few boost guys have complained about eradict idling. The problem is often due to a dirty idle control valve, located on the underside of the throttle body.

It's pretty basic stuff, nothing difficult. Begin by removing the misc. electronic plugs from the throttle body. Remove the two bolts and two nuts, then pop the throttle body off. Turn it over, and you'll see the IAC valve bolted to the underside of the TB. Remove the screws, then remove the electronic portion of the valve. After it's removed, soak the valve with non-chlorinated brake cleaner and work the valve back and forth to clear the build-up. I'd let it dry for at least a day (might be overkill, but oh well, I've got the garage to leave the car in), then reinstall.

I haven't cleaned the valve yet, but will post pics tomorrow night to show a before & after.

Here are the pics:

_Underside of the throttle body, with the IAC valve removed:


_IAC valve removed. Notice the electronic portion that should be removed prior to spraying:


_The build-up around the IAC valve:


_Shot with the electronics removed. The valve has a magnetic end:
__________________
SOLD: 2002 ABP Acura RSX Type-S - 244.5whp, 180wtq

NEW PROJECT: 1999 Mustang SVT Cobra - 4.6L DOHC V8 - 320hp, 317tq

DAILY: 2008 Dodge Ram 1500 Quad Cab Big Horn - 4.7L Magnum V8 w/Flex Fuel - 310hp, 330tq
soccerman002 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-07-2005, 08:22 PM   #2
K20A2_S
Monsters of the Midway
 
K20A2_S's Avatar
 
Join Date: Aug 2004
Location: Houston, TX
Posts: 15,107
iTrader: (1)
K20A2_S is an unknown quantity on c-rsx
^^this will help a lot of people. Props for the good write up.
K20A2_S is offline   Reply With Quote
Old 07-07-2005, 08:28 PM   #3
soccerman002
Fix it 'til it's broken
 
soccerman002's Avatar
 
Join Date: Jun 2003
Location: Chesapeake, VA
Posts: 12,041
iTrader: (7)
soccerman002 is an unknown quantity on c-rsx
Quote:
Originally Posted by K20A2_S
^^this will help a lot of people. Props for the good write up.
Yeah, it's basic stuff, but not something a lot of people have seen before.

Just trying to contribute, although I'm a relative newb to the turbo forums.
__________________
SOLD: 2002 ABP Acura RSX Type-S - 244.5whp, 180wtq

NEW PROJECT: 1999 Mustang SVT Cobra - 4.6L DOHC V8 - 320hp, 317tq

DAILY: 2008 Dodge Ram 1500 Quad Cab Big Horn - 4.7L Magnum V8 w/Flex Fuel - 310hp, 330tq
soccerman002 is offline   Reply With Quote
 
Old 07-08-2005, 09:13 AM   #4
BlackNite
SS Specialist to the 6th
 
Join Date: Nov 2002
Location: Norfolk, VA
Posts: 32,460
iTrader: (12)
BlackNite is an unknown quantity on c-rsx
For you to be a soccermom, you sure do have some manly hands. Good stuff
__________________
My Home Page
BlackNite is offline   Reply With Quote
Old 07-08-2005, 09:44 AM   #5
krystar
Master Member
 
krystar's Avatar
 
Join Date: May 2003
Location: Darien/Chicago
Posts: 24,670
iTrader: (9)
krystar is an unknown quantity on c-rsx
and the proper way of cleaning it?
__________________
Quote:
Originally Posted by DJCarbine
I have a 6 sheets of paper in front of me, all of them my fuel maps. I'm noting where to add and take away fuel.
This is the most work I've done at work EVER
krystar is offline   Reply With Quote
Old 07-08-2005, 10:49 AM   #6
i_ABPTypeS_i
Just JBWeld it Bro!
 
Join Date: May 2004
Posts: 1,426
iTrader: (0)
i_ABPTypeS_i is an unknown quantity on c-rsx
good shit, imma try it!
__________________
Cybernation / Hondata / Greddy / Tanabe / Exedy / and more!


i_ABPTypeS_i is offline   Reply With Quote
Old 07-08-2005, 12:06 PM   #7
soccerman002
Fix it 'til it's broken
 
soccerman002's Avatar
 
Join Date: Jun 2003
Location: Chesapeake, VA
Posts: 12,041
iTrader: (7)
soccerman002 is an unknown quantity on c-rsx
Quote:
Originally Posted by krystar
and the proper way of cleaning it?
Spray around the rotary valve with non-chlorinated brake cleaner, and work the valve back and forth until the carbon build-up has cleared away. When I took the valve off initially, I could feel the resistance......plus, you can clearly see the build-up.

I'll have pics up sometime later tonight or tomorrow morning.
__________________
SOLD: 2002 ABP Acura RSX Type-S - 244.5whp, 180wtq

NEW PROJECT: 1999 Mustang SVT Cobra - 4.6L DOHC V8 - 320hp, 317tq

DAILY: 2008 Dodge Ram 1500 Quad Cab Big Horn - 4.7L Magnum V8 w/Flex Fuel - 310hp, 330tq
soccerman002 is offline   Reply With Quote
Old 07-08-2005, 02:02 PM   #8
smp606
iBoost
 
smp606's Avatar
 
Join Date: Jul 2003
Location: PA
Posts: 1,173
iTrader: (4)
smp606 is an unknown quantity on c-rsx
nice! let us know how the idle is after this!!
__________________
06 STi
smp606 is offline   Reply With Quote
Old 07-08-2005, 05:08 PM   #9
i_ABPTypeS_i
Just JBWeld it Bro!
 
Join Date: May 2004
Posts: 1,426
iTrader: (0)
i_ABPTypeS_i is an unknown quantity on c-rsx
I tried this, it fixed the idle a bit, i couldn't get the actual sensor off! Those screws are really on there! So i just sprayed some cleaner through the throttle body and dryed it with compressed air! ON A GOOD NOTE I GOT TO THE KNOCK SENSOR THAT THEY FORGOT TO HOOK BACK UP!!!!!!!!!! 700 Bucks and they forget to plug shit in...not good business!
__________________
Cybernation / Hondata / Greddy / Tanabe / Exedy / and more!


i_ABPTypeS_i is offline   Reply With Quote
Old 07-11-2005, 06:16 PM   #10
03DSM-RSX
713
 
03DSM-RSX's Avatar
 
Join Date: Feb 2004
Location: Houston
Posts: 13,138
iTrader: (13)
03DSM-RSX has a clean start 03DSM-RSX has a clean start 03DSM-RSX has a clean start
this should be a sticky in the car care or DIY, b/c i have the same problem with my non boosted auto. acura is replacing the thing instead of cleaning it. this would apply to all rsx's with eratic idle problems like i do.
__________________
RSX Base Auto w/ K24A2 swap
2010 BMW 335d w/ Sport Package

03DSM-RSX is offline   Reply With Quote
Old 07-12-2005, 07:54 AM   #11
FullEffect256
Senior Member
 
Join Date: Jan 2005
Location: Randolph, NJ
Posts: 670
iTrader: (-1)
FullEffect256 is an unknown quantity on c-rsx
Quote:
Originally Posted by i_ABPTypeS_i
I tried this, it fixed the idle a bit, i couldn't get the actual sensor off! Those screws are really on there! So i just sprayed some cleaner through the throttle body and dryed it with compressed air! ON A GOOD NOTE I GOT TO THE KNOCK SENSOR THAT THEY FORGOT TO HOOK BACK UP!!!!!!!!!! 700 Bucks and they forget to plug shit in...not good business!
ah come on, use some technique... the screw is a phillips head... therefore it's not made to take alot of torque... the bolt is obviously seized so it's hard to brake loose... just grab the head w/ vice grips and turn...then do the rest w/ the screw driver...when you put it back in, put some anti-seize on the threads
FullEffect256 is offline   Reply With Quote
Old 07-12-2005, 08:46 AM   #12
soccerman002
Fix it 'til it's broken
 
soccerman002's Avatar
 
Join Date: Jun 2003
Location: Chesapeake, VA
Posts: 12,041
iTrader: (7)
soccerman002 is an unknown quantity on c-rsx
Quote:
Originally Posted by FullEffect256
ah come on, use some technique... the screw is a phillips head... therefore it's not made to take alot of torque... the bolt is obviously seized so it's hard to brake loose... just grab the head w/ vice grips and turn...then do the rest w/ the screw driver...when you put it back in, put some anti-seize on the threads
I ened up using a dremel tool to cut a slot in the head of the bolt, then got a flathead to get it out. The head requires a special bit that I didn't have......I got one of them out with grips, but had to slot the other one. I went and bought replacement bolts a few days back.

Still haven't put it all back together yet, just been busy. Should have some pics up at the end of the week.
__________________
SOLD: 2002 ABP Acura RSX Type-S - 244.5whp, 180wtq

NEW PROJECT: 1999 Mustang SVT Cobra - 4.6L DOHC V8 - 320hp, 317tq

DAILY: 2008 Dodge Ram 1500 Quad Cab Big Horn - 4.7L Magnum V8 w/Flex Fuel - 310hp, 330tq
soccerman002 is offline   Reply With Quote
Old 07-15-2005, 10:00 PM   #13
dolfin
Fast, not furious.
 
dolfin's Avatar
 
Join Date: Jan 2002
Location: Arizona
Posts: 2,281
iTrader: (1)
dolfin is an unknown quantity on c-rsx
Awesome write-up. Please include any more pics of the in process cleaning if possible. + rep on the way. Thanks alot
__________________
2002 RSX Type-S (Arctic Blue)
K20/JSRC (3.2")i/Kpro/injen/Toda/Greddy/wavetrack/EPS/mugen/5zigen/toyo
dolfin is offline   Reply With Quote
Old 07-21-2005, 10:46 AM   #14
soccerman002
Fix it 'til it's broken
 
soccerman002's Avatar
 
Join Date: Jun 2003
Location: Chesapeake, VA
Posts: 12,041
iTrader: (7)
soccerman002 is an unknown quantity on c-rsx
Just a quick question. Does anyone know if the valve should be lubricated with any sort of oil prior to reinstallation? Everything is clean inside, but I think it would move better if there were a bit of something added in there.

Just looking for thoughts.
__________________
SOLD: 2002 ABP Acura RSX Type-S - 244.5whp, 180wtq

NEW PROJECT: 1999 Mustang SVT Cobra - 4.6L DOHC V8 - 320hp, 317tq

DAILY: 2008 Dodge Ram 1500 Quad Cab Big Horn - 4.7L Magnum V8 w/Flex Fuel - 310hp, 330tq
soccerman002 is offline   Reply With Quote
Old 07-23-2005, 12:23 PM   #15
rjsdxm
jdm dc5
 
rjsdxm's Avatar
 
Join Date: Apr 2004
Location: Atlanta/Jersey
Posts: 2,883
iTrader: (67)
rjsdxm is an unknown quantity on c-rsx
did you finish thge cleaning on this i would really like to see pics of the end of the process thank you
__________________
team emotion
My Showoff Thread
Speed Lab Tuning
"RHD Max Racing DC5
"Lexus ISF (Daily)
rjsdxm is offline   Reply With Quote
Old 07-23-2005, 01:48 PM   #16
MrBurner
Traction is for pussies
 
MrBurner's Avatar
 
Join Date: Dec 2001
Location: back to Arizona for good
Posts: 4,404
iTrader: (1)
MrBurner is an unknown quantity on c-rsx
Quote:
Originally Posted by soccerman002
Just a quick question. Does anyone know if the valve should be lubricated with any sort of oil prior to reinstallation? Everything is clean inside, but I think it would move better if there were a bit of something added in there.

Just looking for thoughts.
i don't think anything needs to be lubricated
__________________
Turbo Forum Moderator

Car is totalled - everything must go
EVERYTHING IS FOR SALE - NEW FOR SALE PAGE JUST CREATED 01/28/06 - TONS OF RSX PARTS FOR SALE OFF MY TOTALLED TURBOCHARGED RSX-S


www.mrburner.com

KPRO IS SOLD
MrBurner is offline   Reply With Quote
Old 07-23-2005, 01:56 PM   #17
MrBurner
Traction is for pussies
 
MrBurner's Avatar
 
Join Date: Dec 2001
Location: back to Arizona for good
Posts: 4,404
iTrader: (1)
MrBurner is an unknown quantity on c-rsx
went ahead and added this to the install guides sticky for you guys
__________________
Turbo Forum Moderator

Car is totalled - everything must go
EVERYTHING IS FOR SALE - NEW FOR SALE PAGE JUST CREATED 01/28/06 - TONS OF RSX PARTS FOR SALE OFF MY TOTALLED TURBOCHARGED RSX-S


www.mrburner.com

KPRO IS SOLD
MrBurner is offline   Reply With Quote
Old 07-23-2005, 03:51 PM   #18
soccerman002
Fix it 'til it's broken
 
soccerman002's Avatar
 
Join Date: Jun 2003
Location: Chesapeake, VA
Posts: 12,041
iTrader: (7)
soccerman002 is an unknown quantity on c-rsx
Quote:
Originally Posted by rjsdxm
did you finish thge cleaning on this i would really like to see pics of the end of the process thank you
Cleaning is finished, just haven't gotten around to taking any pics. I'll be finishing the turbo up tomorrow, so I'll be updating all of my threads then. I bumped up the idle in K-Pro to 1000 and lowered the idle adjustment slider by 2 notches. Hopefully that, coupled with the clean valve, will take care of the idle issues.
__________________
SOLD: 2002 ABP Acura RSX Type-S - 244.5whp, 180wtq

NEW PROJECT: 1999 Mustang SVT Cobra - 4.6L DOHC V8 - 320hp, 317tq

DAILY: 2008 Dodge Ram 1500 Quad Cab Big Horn - 4.7L Magnum V8 w/Flex Fuel - 310hp, 330tq
soccerman002 is offline   Reply With Quote
Old 07-24-2005, 09:22 PM   #19
soccerman002
Fix it 'til it's broken
 
soccerman002's Avatar
 
Join Date: Jun 2003
Location: Chesapeake, VA
Posts: 12,041
iTrader: (7)
soccerman002 is an unknown quantity on c-rsx
Got everything for the turbo reassembled tonight. I'll be starting the car up tomorrow after work. Anyway, here are before & after pics of the idle control valve. In the first pic, you can see the carbon build-up in the areas surrounding the valve. In the second pic, you can clearly see the improvement. I'll know tomorrow whether or not cleaning the valve made a difference.

Before:


After:
__________________
SOLD: 2002 ABP Acura RSX Type-S - 244.5whp, 180wtq

NEW PROJECT: 1999 Mustang SVT Cobra - 4.6L DOHC V8 - 320hp, 317tq

DAILY: 2008 Dodge Ram 1500 Quad Cab Big Horn - 4.7L Magnum V8 w/Flex Fuel - 310hp, 330tq
soccerman002 is offline   Reply With Quote
Old 07-25-2005, 04:03 AM   #20
Joe D.
K20A2/EP3 soon!
 
Joe D.'s Avatar
 
Join Date: Jul 2005
Posts: 61
iTrader: (1)
Joe D. is an unknown quantity on c-rsx
dang thanks for sharing I am definitely doing this!
Joe D. is offline   Reply With Quote
Old 07-28-2005, 12:38 PM   #21
soccerman002
Fix it 'til it's broken
 
soccerman002's Avatar
 
Join Date: Jun 2003
Location: Chesapeake, VA
Posts: 12,041
iTrader: (7)
soccerman002 is an unknown quantity on c-rsx
Car started up a like a champ a few days ago. I think it's a very good idea to take some additional time during a turbo install (especially for those with mileage on the higher side.....mine has 56k miles) and clean this valve out. I set the idle for my car to 1000tpm w/K-Pro and it holds there solid, no fluctuations at all.

Very simple to do, and your car will thank you for it.
__________________
SOLD: 2002 ABP Acura RSX Type-S - 244.5whp, 180wtq

NEW PROJECT: 1999 Mustang SVT Cobra - 4.6L DOHC V8 - 320hp, 317tq

DAILY: 2008 Dodge Ram 1500 Quad Cab Big Horn - 4.7L Magnum V8 w/Flex Fuel - 310hp, 330tq
soccerman002 is offline   Reply With Quote
Old 10-04-2006, 04:22 AM   #22
civicr2gs5
Member
 
Join Date: May 2006
Posts: 76
iTrader: (0)
civicr2gs5 is an unknown quantity on c-rsx
did you also replace the throttle body gasket after doing this?
civicr2gs5 is offline   Reply With Quote
Old 03-16-2007, 08:16 PM   #23
Ryan
Bowchickabowwow !!!
 
Ryan's Avatar
 
Join Date: Jul 2005
Location: Houston
Posts: 152,614
iTrader: (61)
Ryan is a jewel in the rough of c-rsx Ryan is a jewel in the rough of c-rsx Ryan is a jewel in the rough of c-rsx Ryan is a jewel in the rough of c-rsx Ryan is a jewel in the rough of c-rsx Ryan is a jewel in the rough of c-rsx Ryan is a jewel in the rough of c-rsx Ryan is a jewel in the rough of c-rsx Ryan is a jewel in the rough of c-rsx
i recently drove through a decent sized puddle during hard rain, and my car shut off (i have a cold air intake). the car cranked up, but was idling like crazy, fluctuating between 1k and 3k. i cleaned out the IACV w/ the help of this guide, and it worked like a charm! two of the hoses connecting to the iacv contain coolant, so dont freak out when you see liquid oozing out continuously. i just zip tied it up temporarily so that it doesnt drain out. also, while spraying it with carb cleaner, rotate the part that goes into the sensor so it can clean everything out in there. i also used a q-tip to clean it even further. oh and dont forget, there's a rubber grommet/washer between the iacv and the sensor on the iacv.
__________________
2012 TL
2002 Tacoma
2007 STI
2004 S2000
2006 WRX
2006 SC'd RSX-S
Ryan is offline   Reply With Quote
Old 07-22-2007, 04:21 PM   #24
rick1024
Eat Liberals
 
rick1024's Avatar
 
Join Date: Dec 2004
Location: Private Island
Posts: 16,445
iTrader: (34)
rick1024 might be well recognized one day on c-rsx rick1024 might be well recognized one day on c-rsx rick1024 might be well recognized one day on c-rsx rick1024 might be well recognized one day on c-rsx rick1024 might be well recognized one day on c-rsx rick1024 might be well recognized one day on c-rsx rick1024 might be well recognized one day on c-rsx rick1024 might be well recognized one day on c-rsx
sweet cant wait to try this, ever since i put my jrrh in my idle has been all screwed up
__________________
R.I.P. Andru Hu
MILTEKNIK
IDONTGIVAFLUSH
FUCK YOUR OFFSET
rick1024 is offline   Reply With Quote
Old 08-15-2007, 09:50 PM   #25
rollinonrsx
Senior Member
 
rollinonrsx's Avatar
 
Join Date: Aug 2006
Location: Michigan
Posts: 459
iTrader: (2)
rollinonrsx is an unknown quantity on c-rsx
i was trying to do this right now and im having a big problem with taking off a screw so im taking a break lol
__________________
2003 Volkswagen Jetta 2.0L (parts 4 sale)
2002 RSX-S (part-out)
2003 Supercharged RSX-S

Part Out: http://forums.clubrsx.com/showthread.php?t=496953
K20A2-swap http://www.hondamarketplace.com/zerothread/2089262
rollinonrsx is offline   Reply With Quote
Reply

Bookmarks

Tags
cleaning , guide , iac , valve , w or pics

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:14 PM.


Privacy Policy  |  Disclaimer Notice
Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright 2001-2012, Club RSX, Inc. All rights reserved worldwide.
This website is owned and operated by Club RSX, Inc.
Club RSX, Club EP3, and Club ILX are not affiliated with American Honda Motor Co., Inc.