Replaced IAC valve - AcuraZine - Acura Enthusiast Community

Notices

Replaced IAC valve

 
Old 05-16-2006, 05:37 PM
  #1  
Registered Member
Thread Starter
 
Join Date: Oct 2002
Location: San Jose, CA
Age: 39
Posts: 148
Thanks: 0
Thanked 2 Times in 1 Post
Replaced IAC valve

My idle control valve crapped out in traffic yesterday and I ended up having to brake and gas at the same time to keep it from stalling. Installed a new one and after an ecu reset, it idles nicely now. It also cured the problem I had with my rpms dipping as I take off in 1st gear.

Here are some hot naked pics of it:


NarTaX is offline  
The Following 2 Users Say Thank You to NarTaX For This Useful Post:
BOBSRED40 (11-01-2018), webmastir (07-14-2012)
Old 05-16-2006, 05:52 PM
  #2  
Registered Member
 
Sims's Avatar
 
Join Date: Oct 2004
Location: Calgary, Alberta, Canada
Age: 37
Posts: 102
Thanked 0 Times in 0 Posts
nice - how much did it cost you and how long did it take?
Sims is offline  
Old 05-16-2006, 06:03 PM
  #3  
Registered Member
Thread Starter
 
Join Date: Oct 2002
Location: San Jose, CA
Age: 39
Posts: 148
Thanks: 0
Thanked 2 Times in 1 Post
About 30 minutes. $149 from my local Honda stealer. Would have saved a lot if I got it online but I just wanted to fix it right away.
NarTaX is offline  
Old 08-08-2006, 10:33 PM
  #4  
Loose Cannon
 
lcstyle's Avatar
 
Join Date: Jul 2006
Location: Boston, MA
Age: 40
Posts: 169
Thanked 5 Times in 4 Posts
most of the IAC valve problems are simply the unit getting stuck, because of the black deposits that you can clearly see. A little carb cleaner should unstick it and get it right back working again. worked for me on other cars, don't see why it shouldnt work on the CL. Also, in your case the actual servo / motor assembly could have been burnt since the gradual resistance that is imposed by the buildup of deposits, so it might actually have needed to be replaced.
lcstyle is offline  
Old 10-11-2007, 12:45 PM
  #5  
Uses turn signals in my
 
TCM 01 CL-S's Avatar
 
Join Date: Jun 2006
Location: South Florida
Posts: 2,108
Thanked 2 Times in 2 Posts
Anyone have a DIY on cleaning it yet? I read in the other thread that you have to remove the two bolts to get it by itself, but some said you didn't need to remove the TB, some said you did. If I manage to do this succesfully I'll see If I can make a DIY for cleaning it. Any other tips? I have intake/carb cleaner which I plan to use.
TCM 01 CL-S is offline  
Old 10-11-2007, 02:45 PM
  #6  
Senior Moderator
iTrader: (2)
 
fuzzy02CLS's Avatar
 
Join Date: Jan 2003
Location: South FL
Age: 43
Posts: 16,849
Thanked 222 Times in 183 Posts
I think it's just easier to remove the TB. That way you can also clean out the carbon buildup on the TB & spray some cleaner into the intake manifold as well.

When I replaced my IAC valve I did it this way.

It's actually not very hard to do. It's very straight forward & mostly self explanatory.
fuzzy02CLS is offline  
Old 10-11-2007, 06:03 PM
  #7  
said goodbye to the
 
Join Date: Feb 2005
Location: San Diego, Ca
Posts: 5,785
Thanked 17 Times in 15 Posts
Originally Posted by fuzzy02CLS
I think it's just easier to remove the TB. That way you can also clean out the carbon buildup on the TB & spray some cleaner into the intake manifold as well.

When I replaced my IAC valve I did it this way.

It's actually not very hard to do. It's very straight forward & mostly self explanatory.
very easy to replace. it'll do you some good to clean the TB being that you're already in that area.

TCM. i recommend you use a throttle body cleaner spray instead. when i was installing my Thermoblok spacers, i was cleaning my TB and used the stuff you mentioned. i soon had my IACV acting up. just a heads-up.
Sun Diego CL-S is offline  
Old 10-11-2007, 06:57 PM
  #8  
'03 ABP YA4-S 6MT
 
Join Date: Mar 2007
Location: Edmonton, AB
Age: 32
Posts: 1,192
Thanks: 0
Thanked 17 Times in 17 Posts
personally i used carb cleaner, sprayed it a few times and kinda swished the fluid around inside of the iacv, and did it until the fluid that came out was as clear as it went in (initially it was coming out black).

that seems to have worked for the time being
rp_guy is offline  
Old 10-11-2007, 06:58 PM
  #9  
Uses turn signals in my
 
TCM 01 CL-S's Avatar
 
Join Date: Jun 2006
Location: South Florida
Posts: 2,108
Thanked 2 Times in 2 Posts
Originally Posted by Sun Diego CL-S
very easy to replace. it'll do you some good to clean the TB being that you're already in that area.

TCM. i recommend you use a throttle body cleaner spray instead. when i was installing my Thermoblok spacers, i was cleaning my TB and used the stuff you mentioned. i soon had my IACV acting up. just a heads-up.
I'll get a can of that. Thanks for the heads up.
TCM 01 CL-S is offline  
Old 10-11-2007, 08:26 PM
  #10  
Uses turn signals in my
 
TCM 01 CL-S's Avatar
 
Join Date: Jun 2006
Location: South Florida
Posts: 2,108
Thanked 2 Times in 2 Posts
How much do I retorque the bolts back to?
TCM 01 CL-S is offline  
Old 10-11-2007, 08:55 PM
  #11  
Senior Moderator
iTrader: (2)
 
fuzzy02CLS's Avatar
 
Join Date: Jan 2003
Location: South FL
Age: 43
Posts: 16,849
Thanked 222 Times in 183 Posts
Just sung them. Turn until they are tight then turn another 1/4 turn. You should be good.
fuzzy02CLS is offline  
Old 10-11-2007, 09:41 PM
  #12  
Uses turn signals in my
 
TCM 01 CL-S's Avatar
 
Join Date: Jun 2006
Location: South Florida
Posts: 2,108
Thanked 2 Times in 2 Posts
Apparently I am an idiot, I believe I got all the bolts off, Unclipped a couple of the sensors, but I couldn't get the thing to budge a damn bit and I didn't want to break anything. . I got to get up early to run some errans so I just redid everything I undid for now.

Maybe it's time for me to get a helms. I might try again tomorrow after class when I have more time.
TCM 01 CL-S is offline  
Old 10-12-2007, 09:06 AM
  #13  
Senior Moderator
iTrader: (2)
 
fuzzy02CLS's Avatar
 
Join Date: Jan 2003
Location: South FL
Age: 43
Posts: 16,849
Thanked 222 Times in 183 Posts
The TB may be stuck on there because of the gasket. A light tap or 2 around the TB with a large hammer will knock it loose. But please put a towel over the TB first so you don't damage it.
fuzzy02CLS is offline  
Old 10-12-2007, 11:27 AM
  #14  
Uses turn signals in my
 
TCM 01 CL-S's Avatar
 
Join Date: Jun 2006
Location: South Florida
Posts: 2,108
Thanked 2 Times in 2 Posts
Originally Posted by fuzzy02CLS
The TB may be stuck on there because of the gasket. A light tap or 2 around the TB with a large hammer will knock it loose. But please put a towel over the TB first so you don't damage it.
I'll get that a try later on this weekend. Would I need a new gasket?
TCM 01 CL-S is offline  
Old 10-12-2007, 11:51 AM
  #15  
Senior Moderator
iTrader: (2)
 
fuzzy02CLS's Avatar
 
Join Date: Jan 2003
Location: South FL
Age: 43
Posts: 16,849
Thanked 222 Times in 183 Posts
Maybe. I didn't in the past, but you never know.
fuzzy02CLS is offline  
Old 10-12-2007, 03:28 PM
  #16  
Registered Member
 
Join Date: Apr 2004
Location: 90630
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
I'm doing mine this weekend too... I would definitely recommend a new gasket. I think they're about $1 or $2 from the dealership. Any air leaks from re-using the old gasket is going to cause issues (un-metered air past the MAF). Cheap insurance if you know what I mean. Good luck sir.
gmahn is offline  
Old 10-12-2007, 04:07 PM
  #17  
Senior Moderator
iTrader: (2)
 
fuzzy02CLS's Avatar
 
Join Date: Jan 2003
Location: South FL
Age: 43
Posts: 16,849
Thanked 222 Times in 183 Posts
umm.......We do not have a Mass Air flow sensor
fuzzy02CLS is offline  
Old 10-12-2007, 04:21 PM
  #18  
Registered Member
 
Join Date: Apr 2004
Location: 90630
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by fuzzy02CLS
umm.......We do not have a Mass Air flow sensor
Ahh shoot, that right.

Any air getting past that IACV from a busted gasket would cause a funky idle though.
gmahn is offline  
Old 10-16-2007, 06:25 PM
  #19  
Registered Member
 
Join Date: Mar 2005
Location: 415
Age: 40
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
any pics of the throttle body? i have no idea what that is or what it looks like.
Jesus Walks is offline  
Old 06-08-2008, 07:47 PM
  #20  
6speed
 
jl03CLS's Avatar
 
Join Date: Feb 2008
Location: Seattle, WA
Age: 34
Posts: 348
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by mytran
how did you get these two pieces apart? mine has a 5 star head and i dont want to strip it :\. or is it ok to just spray carb cleaner in there even with the sensor?
jl03CLS is offline  
Old 06-08-2008, 09:21 PM
  #21  
Uses turn signals in my
 
TCM 01 CL-S's Avatar
 
Join Date: Jun 2006
Location: South Florida
Posts: 2,108
Thanked 2 Times in 2 Posts
Originally Posted by fuzzy02CLS
The TB may be stuck on there because of the gasket. A light tap or 2 around the TB with a large hammer will knock it loose. But please put a towel over the TB first so you don't damage it.
I know this is late, but that did do the trick, used a mallet instead though.
TCM 01 CL-S is offline  
Old 03-01-2010, 10:44 PM
  #22  
New Member
 
Join Date: Jan 2005
Location: Los Angeles
Age: 43
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
So I just did all this and it seems to be worse. There is a major increase in noise from the air box, and I can hear a clicking noise from what looks like an air valve in the upper drivers side of the engine compartment. car surges when put in gear.

Cleaned the iacv, lubed the shaft, cleaned out the throttle body a bit. My surge goes from 1k-3k at idle. If I turn on the air reduces to 2k ish. thing sat for about 4 months while I waited for money and parts.

When I pulled the iacv it seems frozen. It was hard to spin at first and then I could spin it but it made a grinding sound as It passed against the back part of the housing. after I shot it a ton with TB cleaner and scrubbed with a brush I could spin it a great deal better, but it still seemed rough. Dont know how it should feel, my guess was more like a skate wheel.

Any thoughts? also has the P0505 error code.

edit: did something happen here that reset our accounts? I am not a new member as you can tell (joined 1/05) but thread count and status seem new...
cojnit is offline  
Old 03-02-2010, 09:23 AM
  #23  
"DD" Designated Drinker
 
Nicks01CL-S's Avatar
 
Join Date: Feb 2009
Location: Knoxville, TN
Age: 30
Posts: 262
Thanks: 0
Thanked 1 Time in 1 Post
ok this might be a related question.(car is an Auto)
When i come to a stop from the interstate or from just red light to redlight it drops the rpms real low like its gonna stahl but them comes back.
it is not changing RPMs like yours but it just made me thing this could be a sign its gonna happen. any one know what it is?
Nicks01CL-S is offline  
Old 03-02-2010, 10:19 AM
  #24  
'03 ABP YA4-S 6MT
 
Join Date: Mar 2007
Location: Edmonton, AB
Age: 32
Posts: 1,192
Thanks: 0
Thanked 17 Times in 17 Posts
Originally Posted by cojnit View Post
So I just did all this and it seems to be worse. There is a major increase in noise from the air box, and I can hear a clicking noise from what looks like an air valve in the upper drivers side of the engine compartment. car surges when put in gear.

Cleaned the iacv, lubed the shaft, cleaned out the throttle body a bit. My surge goes from 1k-3k at idle. If I turn on the air reduces to 2k ish. thing sat for about 4 months while I waited for money and parts.

When I pulled the iacv it seems frozen. It was hard to spin at first and then I could spin it but it made a grinding sound as It passed against the back part of the housing. after I shot it a ton with TB cleaner and scrubbed with a brush I could spin it a great deal better, but it still seemed rough. Dont know how it should feel, my guess was more like a skate wheel.

Any thoughts? also has the P0505 error code.

edit: did something happen here that reset our accounts? I am not a new member as you can tell (joined 1/05) but thread count and status seem new...
i think you need a new one..
rp_guy is offline  
Old 03-18-2012, 04:57 PM
  #25  
C E R T I F I E D
 
jkr_j32a2's Avatar
 
Join Date: Sep 2009
Location: Houston
Age: 34
Posts: 50
Thanked 0 Times in 0 Posts
Originally Posted by jl03CLS View Post
how did you get these two pieces apart? mine has a 5 star head and i dont want to strip it :\. or is it ok to just spray carb cleaner in there even with the sensor?
What did you use to take the star screws off?
jkr_j32a2 is offline  
Old 03-18-2012, 05:49 PM
  #26  
Registered Member
 
Join Date: Nov 2007
Age: 32
Posts: 233
Thanked 8 Times in 8 Posts
Originally Posted by lcstyle View Post
most of the IAC valve problems are simply the unit getting stuck, because of the black deposits that you can clearly see. A little carb cleaner should unstick it and get it right back working again. worked for me on other cars, don't see why it shouldnt work on the CL. Also, in your case the actual servo / motor assembly could have been burnt since the gradual resistance that is imposed by the buildup of deposits, so it might actually have needed to be replaced.
EXACTLY!!! I took my TB off to diy port job on it and i think some metal shavings got in there and made it stick... So i soaked it in gasoline then sprayed w carb cleaner and took an air compressor to it and PROBLEM SOLVED!

its just kinda a pain getting those two little screws out from underneath.
03CLSMT is offline  
Old 03-18-2012, 06:02 PM
  #27  
Registered Member
 
Join Date: Nov 2007
Age: 32
Posts: 233
Thanked 8 Times in 8 Posts
Originally Posted by cojnit View Post
So I just did all this and it seems to be worse. There is a major increase in noise from the air box, and I can hear a clicking noise from what looks like an air valve in the upper drivers side of the engine compartment. car surges when put in gear.

Cleaned the iacv, lubed the shaft, cleaned out the throttle body a bit. My surge goes from 1k-3k at idle. If I turn on the air reduces to 2k ish. thing sat for about 4 months while I waited for money and parts.

When I pulled the iacv it seems frozen. It was hard to spin at first and then I could spin it but it made a grinding sound as It passed against the back part of the housing. after I shot it a ton with TB cleaner and scrubbed with a brush I could spin it a great deal better, but it still seemed rough. Dont know how it should feel, my guess was more like a skate wheel.

Any thoughts? also has the P0505 error code.

edit: did something happen here that reset our accounts? I am not a new member as you can tell (joined 1/05) but thread count and status seem new...
that happened to me the first time... get a coat hanger or something small u can fit in there and play w the valves while u spray the carb cleaner ...air compressor works really well too
03CLSMT is offline  
Old 03-18-2012, 08:06 PM
  #28  
put it in your mouth
iTrader: (8)
 
civicdrivr's Avatar
 
Join Date: Jul 2008
Location: VA
Age: 30
Posts: 29,634
Thanked 4,426 Times in 2,721 Posts
Originally Posted by jkr_j32a2 View Post
What did you use to take the star screws off?
Get the correct bits, or dremel a slot into them and use it as a flat head screw. Be careful though, they could be very tight so you may snap the heads off if you use the second method.
civicdrivr is offline  
The Following User Says Thank You to civicdrivr For This Useful Post:
jkr_j32a2 (03-20-2012)
Old 03-20-2012, 10:42 PM
  #29  
C E R T I F I E D
 
jkr_j32a2's Avatar
 
Join Date: Sep 2009
Location: Houston
Age: 34
Posts: 50
Thanked 0 Times in 0 Posts
Originally Posted by civicdrivr View Post
Get the correct bits, or dremel a slot into them and use it as a flat head screw. Be careful though, they could be very tight so you may snap the heads off if you use the second method.
never thought to use the dremel
jkr_j32a2 is offline  
Old 03-21-2012, 12:45 AM
  #30  
lowrd on tein CS biatch
iTrader: (2)
 
CL-S progression 01's Avatar
 
Join Date: Apr 2009
Location: Mississauga
Age: 31
Posts: 4,766
Thanked 135 Times in 121 Posts
i would just clap it down so it's secured to something and then get the correct bit in a drill and it should come loose.

something i do on the reg for cracking old bolts with a drill is i will lean on the drill as i push the trigger and this prevents it from popping out or stripping it
CL-S progression 01 is offline  
Old 03-23-2012, 12:17 AM
  #31  
Missing My CL-S
iTrader: (1)
 
SG81's Avatar
 
Join Date: May 2004
Location: Toronto
Posts: 11,377
Thanked 13 Times in 12 Posts
anyone know the Honda part # for this?
SG81 is offline  
Old 03-23-2012, 09:06 AM
  #32  
lowrd on tein CS biatch
iTrader: (2)
 
CL-S progression 01's Avatar
 
Join Date: Apr 2009
Location: Mississauga
Age: 31
Posts: 4,766
Thanked 135 Times in 121 Posts
call ur dlr and ask them, it's one of the only things they do for free lol

put em to use for a change
CL-S progression 01 is offline  
Old 03-23-2012, 11:34 AM
  #33  
put it in your mouth
iTrader: (8)
 
civicdrivr's Avatar
 
Join Date: Jul 2008
Location: VA
Age: 30
Posts: 29,634
Thanked 4,426 Times in 2,721 Posts
16022-p8a-a03
civicdrivr is offline  
The Following User Says Thank You to civicdrivr For This Useful Post:
SG81 (03-23-2012)
Old 03-23-2012, 11:41 AM
  #34  
Missing My CL-S
iTrader: (1)
 
SG81's Avatar
 
Join Date: May 2004
Location: Toronto
Posts: 11,377
Thanked 13 Times in 12 Posts
Originally Posted by civicdrivr View Post
16022-p8a-a03
thanks. mine has been phucking up lately
SG81 is offline  
Old 03-24-2012, 09:28 PM
  #35  
C E R T I F I E D
 
jkr_j32a2's Avatar
 
Join Date: Sep 2009
Location: Houston
Age: 34
Posts: 50
Thanked 0 Times in 0 Posts
Originally Posted by SG81 View Post
thanks. mine has been phucking up lately
did your VSA and Check Engine light come on?
jkr_j32a2 is offline  
Old 03-24-2012, 10:12 PM
  #36  
Missing My CL-S
iTrader: (1)
 
SG81's Avatar
 
Join Date: May 2004
Location: Toronto
Posts: 11,377
Thanked 13 Times in 12 Posts
Originally Posted by jkr_j32a2 View Post
did your VSA and Check Engine light come on?
Yes the check engine light has come on, but i didn't run the code yet, so it could even be something else
SG81 is offline  
Old 04-14-2012, 08:23 PM
  #37  
Registered Member
 
Join Date: Apr 2012
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Change your IAC and be done with it. I pulled my intake, cleaned a ton of Carbon out of my intake and EGR port. I can't believe the car even ran. When I was putting it back together I decided to clean the throttle body. The first start produced the up and down idle. I unplugged the IAC. That eliminated the surge but produced a rough idle and it produced a code. I can't remember what the code was but it was idle related. I pulled the throttle body and replaced the IAC with aftermarket for around $100. I didn't feel like pulling the throttle body off for a third time. With the new IAC, spotless intake and throttle body the 2000 3.2 TL runs like a scalded dog.
jlee133541 is offline  
Old 03-27-2013, 01:55 PM
  #38  
Registered Member
 
hohmst1's Avatar
 
Join Date: Feb 2012
Location: Baton Rouge
Age: 26
Posts: 20
Thanked 0 Times in 0 Posts
nice writeup. a few questions though. Ive got a 2000 TL and have already cleaned EGR port and replaced IM gaskets. That improved my low end power and helped a lot, but I have issues with idle. My car will be (when warmed up) idling normal at around 750rpm, but will drop to 500 or less for a short second then back to normal. It's not a misfire, as I have no CEL on and have checked all ignition/coil packs. I also cleaned my TB when I cleaned the EGR port, but I neglected to replace the TB gaskets (and I think I cracked one). I know of the carb spray diagnosis to find vac leaks, but I 'think' it's either A. my TB gasket leaking air causing the idle to fluctuate or B. my IACV is bad. Now here are the questions I have lol.

1. Im experiencing power loss, specifically in lower rpms (before VTEC kicks in)
2. When engine is warm, rpms fluctuate similar to it misfiring, and when I give it gas itll wanna stall, but it quickly goes back to normal after jamming down on the accelerator. Similarly, when I start my car after running it for a while, it'll misfire SUPER bad. ive read this is called heat blow-by or some term, something about the heat in the engine.
3. I just want to know what route to take. i plan on replacing all TB gaskets and cleaning it, and I think my IACV is either bad/clogged. SOOO, am i Just pissing up a flag pole trying to clean it instead of replacing it? Should I clean it and see what hapens or should I just go with a new one? Also, once I get the IACV off, i just spray the inside with cleaner? Or do I need to take it completely apart? (ive never taken it off before, just the IM and TB). sorry for the goddamn novel, but I love my acura and acurazine members are pretty much my mechanic lol. get back with me if anyone has suggestions for me. Thanks!!
hohmst1 is offline  
Old 04-12-2013, 02:14 PM
  #39  
Registered Member
 
hohmst1's Avatar
 
Join Date: Feb 2012
Location: Baton Rouge
Age: 26
Posts: 20
Thanked 0 Times in 0 Posts




^the afro engineered CAI caused massive leaks. new pipe and vac lines, and TB gaskets and im good! thanks
hohmst1 is offline  
Old 09-17-2014, 02:30 AM
  #40  
Registered Member
 
Join Date: Jul 2014
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Great discussion all, thanks much!
ergman is offline  

Thread Tools
Search this Thread
Quick Reply: Replaced IAC valve


Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.