How to Clean or Replace a Honda IAC (Idle Air Control) Valve - Solve Poor Idle Issues 

I'm beginning to get the feeling ("there's no need to drain the coolant "-)

This fixed my idle problem thank you ! Did not need to drain coolant

Fantastic video! Short, easy and to the point.

You know coolant runs through this iacv, so make sure your radiator is not rusty and clogging iacv with rust fragments. A way to check for rust is to remove coolant reservoir and tilt as you look inside the bottom. If you see dirt or rust, replace radiator as you clean and replace iacv gasket with oem one (very cheap). Bleed radiator of any air. IF that doesn't fix idle problems, then replace iacv valve.

Thank you DIY Auto Repair Videos for sharing and sending this Tutorial video godbless you 🙏🙏

Thank you kind sir, it helped tremendously. Just took her in for smog, hopefully she passes.

no need to drain the coolant!

Tq for uploading this video...it helps me alot

Great video man. Very helpful.

The IACV sensor of my B16 Was dirty af, so i cleaned it the same way but with brake cleaner. Now its working. At first it had a problem with the rpm.

This worked for me, fixed my weak idle at cold start 🎉

I don't think you have to drain the coolant. I would put a pan or some shop rags under where you working. Some might leak out. Also, if you are going to clean it. It's a good idea to remove the gasket before you spray chemicals on it

Good tutorial. I have a 93 integra and I'm replacing the IACV and it's a real pain. While you have just enough space to get in there, the Integra has a number of lines that run across the throttle body preventing you from getting your hand in there. I guess I'll just have to remove them. BTW: Why did you have to drain the coolant??

Before buying a part that cost almost $200.00 you might wanna run a test , get some wires and connect to a battery see if valve open n closes.

Thanks for helpimg me.

oh okay. so the lines go directly to the engine from the idle air control valve? and its okay, I really appreciate this help

did this repair today. fixed my idle just like u said. ty

So cleaning is just the screen. Let dry and not remove coolant lines? Then reattach? That gasket will probably need to be replaced?

Can I use throttle body cleaner instead of carb cleaner?

You can't just run down to the Parts store and get an EACV for a Honda. These vehicles Do Not operate Well using Aftermarket idle valves. Get the Factory part which is made by Denso. You'll be Glad ya did.

Please help me DIY Auto Repair. I've got a 1999 Civic that is starting to drive me nuts... A few weeks ago it wouldn't start, so I had it towed to a shop and two days later it was ready... The guy from the shop told me that it had been the distributor (some parts were out of place...) and that no parts were necessary, just some re-adjusting... When I got a chance to open the hood, I found out that the throttle cable had been tightened somewhat... I noticed right away that the car was idling a little lower than usual, but since it drove fine, I didn't make a big a big fuss about it... Anyway, it would always start with a low rpm, but it would go back to normal shortly after, when I would coast or stop. However, a few days later, when I went for a drive and sped quite a bit on an open road, the car's idle has changed significantly... It idles at around 1500 rpm when coasting until I come to a full stop, after which the idle drops to 1200 rpm... On cold starts, it revs up to 2000 rpm, but gradually drops down to 1200 rpm, so I guess the IACV is ok... I've checked the spark plugs which have about 12000 kms on them and look almost new, I've tried readjusting the throttle cable, but to no avail, cleaned the throttle body, searched for any hose with damage, trying to find a vacuum leak with water, I also tried troubleshooting as in the shop manual, where you cover the lower port of the throttle body, where it states if you cover it and there is no change in the idle, then you have a vacuum leak and there is no change to the idle when I cover it... However, if I cover the air inlet tube to the air filter, it makes what seems to be a suction noise... When I have the air inlet removed and stop the engine, a strange noise comes from the throttle body, like two or three hisses... Does this mean I have a vacuum leak? Sorry for the long post... Thanks in advance.

Thank you couldn not figure out the name of it off the parts store as my hose attachments were rusted though and broke when I removed them

o.k., so what is draining the coolant have to do with the replacing and or removing the valve. $33.00 plus at quick stop auto parts.

Fancy ratchet!!! That's a cool one!!!

My 90 Accord has the surging problem but only from a cold start and only lasts 2 mins then back to approx 700-800 RPM, is this like your problem or was it always surging regardless of engine temp (meaning would happen not just at cold start)?

What year Honda is this for? Maybe it says somewhere but I don't see it. also...no engine info

I have honda accord 94 model manual transmission. My problem in my car occurred while having a long travel, the engine lost power and stalled. The other problem is when the car running at 60KPH or more with 3000RPM when I applied brake while in neutral gear, the RPM down until engine stop running. What shall I do, pls help me....

My iacv nipples are pointing up did i put it back wards ? Would it still work? Or is it bc i have a skunk 2 intake manifold

This is why I’ll vote for him

After changing the idle, one of the tubes connected to it keeps leeking coolant. It’s very hard to tighten the tube all the way. Anyone have advice?

Thanks man

is there a relearn procedure for the idle air control valve on a 1994 Honda Civic?

Thanks man.

Do you have to drain the coolant if you just clean the valve?

Where is that tool found? Not that it will make or break doing this job, but it does come in handy. Anyone know, please?

how close is that engine and IAC placement compared to a 2002 4 cyl accord?

it's $50 on eBay oem same exact one as stock,no need to drain coolant

LOL!! DO NOT DRAIN THE COOLANT!!! Simply put a plastic clamp on the two hoses, remove the connector, the two bolts and replace if needed.

I have a 2000 lx won’t start reading iac codes if i replace this should it start?

The iac valve on my 1990 civic hatch just went bad yesterday. Dont think I'm gonna try and clean it due to it probably never being changed. But do you need to replace any gaskets?

Just replaced the head on my 96 accord, f22b2. Started it up and the idle jumped up to 4k rpm. And just stays there. Would this be the problem?

Can you show where the coolant lines go?

Warning: Make sure you put your idle air control valve the correct way round!. On my 2002 Honda CRV 2.0ivtec I put it on the wrong way, and coolant flooded into the intake whilst it was running. Fucked the engine completely!. My biggest car mistake ever. :(

Don’t you have to adjust the idle ? I just put a new ICV on my prelude but when I put it on I’m the car starts idling at 3500 rpm

what coolant is he talking about?

I'm trying to find out how I test the Ideal Speed Control. or should I just try cleaning the IAC. The engine shuts of when put in neutral but other than that runs fine.

2:40 I've spent 3 hours trying to get the hose clamps off now, they are positioned facing the back, and I've even bought a special hose clamp tool to try and get them off... But it is still proving insanely difficult. Any tips?

Good video but probably not a good idea to attempt to spray it still connected as the spray can enter the (black end) motor part of the IACV damaging the unit. Better to disassemble completely, hold vertically so that the black motor is upward so when spray (use straw) to clean -- the spray doesn't go upwards into the black motor area

01 accord idle fluctuates and sometimes stalls when braking and coming to a complete stop. I replaced brake booster after testing it by removing vac line and plugging. Problem still exists. When car is parked while applying brakes idle wil jump to about 1300 then drop to 600 or lower after 2sec. any ideas? IAC maybe? i was also thinking Master Cylinder possibly not functioning properly on booster side. Also i have no problems at the brake pedal.

Thanks for the video. Very clear. Where did you get that badass ratchet?

What's the torque of those two bolts?

Is releasing the water from radiator a must?

Do u need to bleed the new iac.

He has to be using Chilton or Haynes repair manuals. Too many different hondas to remember. What about Carb cleaner?

Thanks. Edit.. Whats that ratchet called?

Way you need to take out the antyfreee need to do it I do my idle control valve I don't take antyfreee way need take out ?? Thank video

where does the hoses go to, i bought the idle regulator but the previous owner remove it from the car. and i dont know where do i plug the hoses

When I replaced this part the idle got worse ?

Just replaced mine. And it still surges when it warms up! When I unplug it while it's running the car runs perfect... So this one is bad too... ugh! It's Brand New!

would be nice to know what year car you were working on. Could have included it in your title since you speed mumbled it in the video.

Cheers

Can you use brake parts cleaner?

I don’t understand why there’s coolant lines connected to a idle air valve. It doesn’t make sense to me.

my car idles roughly when i drive it in first gear at around 10 to 15 kph... civic 2005

$38 on Amazon.OEM fit.

Way need to take aut the antiffre out check to buy the idle control valve where can got it good price dale good parts thank s much

Can anyone please help me I need a replacement bolt for the lower bolt can anyone tell me the exact sizes of the screw

Do you have to drain your coolant before installing your new valve?

What year is this car? This is nothing like what I'm working on.

Which year is that Honda. Mine is Honda accord 2 door 4 cylinder 2001

What if this makes it worse??? I just cleaned it and now it’s all fcked up . My idle won’t hold and drops when I turn the wheel n give gas …..

What if the bolts broke in half

Key name ?

Do u have to drain the coolant ?

Why drain the cooler?????

Good morning to all:. Can someone tell me if I can driver my 99 CRV with the IAC valve disconnected ? car starts ok without it, but if I plug it in, it won't start once it reaches certain temperature. I don't think it will pass the emission test, but, can I run the car with the IAC disconnected ? Please help. Thanks

Where can got the idle air valve control good price

Is there a way to do this without draining the coolant?

Honda made a 2.2 v6 in Accord😳

I don't think you need to drain the coolant.

Please someone answer can this being faulty cause Alot of noise! Like a winding noise Had a mechanic tell me that was the noise

Hey what s up...

I need help taking out some part to get to my Honda civic 98 to get to my idle air control any advice or more video's

Why drain the coolant?

This idle control look the saint Honda CR-V 2000 I got see to like need jonker you thing fit Honda crv

Im scared to diy this...

Damn I just paid a mechanic 350.53 to do this.... wish I wouldve looked it up myself i probably coulve done this myself for cheaper

I thought you were a mechanic. Why would you drain the coolant?

This misguided me. This is not the IAC valve. This is the IAC sensor. The IAC valve is located on the other side of the throttle body and has one hose going into it. You should probably clean both but the valve is usually the bigger issue (actual valve may require disassembly or replacement). Also, when cleaning this part (sensor), you should spray throttle body cleaner into the pipes (where hoses connect). I recommend removing the part and doing this in a well lit place with adequate space. I also do not recommend replacing this part unless absolutely necessary, as cars can be finicky about the replacement. The valve is usually fine to replace... the sensor, better to clean.

I changed mine on my 95 honda accord. Bought a new idle control valve with lifetime warranty. I still have high revs when I turn. Anyone know what else can be the issue?

OK

Eletric cleaner works better

yeah, you Skipped a Lot of Steps, you should show All the steps.!

but y would u clean it just to replace it? lol

0:01 why are you yelling

Ummm that's not a 2.2 liter engine that's a single cam smh