How to: Clean & replace Idle Air Control Valve Ford Duratec HE (Mondeo, Focus, Mazda)

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Simple DIY how to: Remove, clean, and replace the IACV on a Ford Duratec HE or Mazda LF engine.
Video on the throttle body: • How to: Clean & replac...
Video on the throttle position sensor: • How to: Test a throttl...
Nb.: Later Duratec HE's use a drive-by-wire throttle body which effectively incorporate the IACV into the electronic throttle body - this would be a different process.
Idle Air Control Valves get dirty over time along with the rest of the insides of the throttle body assembly, and it's good practice to service them by just cleaning from time to time. Dirty or clogged throttle bodies can lead to irregular or surging idle and engine tune problems.
Failure will mean replacement is necessary. Computer codes may be set so these should be checked with a scan tool first.
Amazon US: amzn.to/2aCHFW6 | Amazon UK: amzn.to/2clCsB2
You will need:
- 8 mm socket and 3/8" or 1/4" socket wrench with short extension bar
- Throttle body cleaner or similar plastic-safe solvent for cleaning (do not use "carb cleaner")
- Rag(s)
- Flashlight.
(Using the above Amazon links will support my channel and is appreciated!)

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Опубликовано:

31 июл 2016

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Комментарии : 73

@CraigsDIY 7 лет назад

Amazon links to relevant products are in the description.

@mwilajoseph6703 Год назад

Thank you so much! Very helpful. I have a ford mondeo duratec HE. I just replaced all 16 valves and other things, but since then the engine has been stalling especially in the congestion. I am suspecting IAC but not really sure. Any advise? Thanks again.

$@ifracing$

@ifracing 3 года назад

Awesome vid mate, i did the same thing, cleaned the s**t out of the iac valve, now im getting 750rpm idle, before i was getting just above 1000, and that was the same even driving for 20 mins, this vid helped. Cheers

@lulube11e111 3 года назад

My car is idiling at 600 rpm when hot. I need to clean it

$@ifracing$

@ifracing 3 года назад

@@lulube11e111 yeah mate, 80% of the time that will cure it, use carb cleaner 😉

@ozziestrom9793 3 года назад

Could this be one reason for the engine light to always be on?

@alexspasov4832 6 лет назад

Hey, my 2009 Mondeo has a electronic TB and here is a problem when the engine is cold and I get to a stop: the moment I press the clutch the car imidiately shuts off... Any ideas?

@aazimmermann 3 года назад

Hi mate, any idea what the numbers on the IAC mean?

@aymankamal9816 4 года назад

i have ford mondeo 2009 sedan 2.3 petrol but i can't get maf sensor to clean it . where is the maf located ?

@ayandaduma5539 3 года назад

Hi! I have a 1.6 ford ikon with a high idle but after a while it get to normal but again it rev itself going up and up

@harrybradley683 Год назад

I have a 2014 Ford Focus with an annoying intermittent problem. It drops revs to 200 then bounces back up to 1000 on start up engine warm/cold and when driving “ revs drop to around 200 and slows down” have had the aux and timing belt changed already. Any help would be appreciated

@adriank7796 2 года назад

How do I do it on the new one u said

@edwardthomas9671 2 года назад

This a mk2 ?

@campodiseno 3 года назад

wow Thank you

@alinandrei9006 3 года назад

hello dude is that a turb0?

@filipoiucatalin 5 лет назад

Hi Craig, very useful video and good explanation. Following your instructions I have easily managed to replace the air control valve, but with the new one the rpm doesn’t go lower than 2500. Any idea why? Thank you in advance

@CraigsDIY 5 лет назад

Too much air presumably, check the gasket for leaks. Check error codes.

@filipoiucatalin 5 лет назад

Thanks Craig. I really learned lots of things from you. I have checked the gasket, no issues. I have fitted the old one and guess what, works great after cleaning. I think the new one is faulty or it might be for a different model

@aazimmermann 3 года назад

@@filipoiucatalin Could the new one not be closing?

@marko_._ 5 лет назад

How much later versions use different type of throttle body? Is 2006 1.8 92kW throttle body and IACV different from this Mondeo in the video?

@CraigsDIY 5 лет назад

They switched to an electronic TB which doesn't need an IACV at some point. It's obvious to look at, if no throttle cable and IACV.

@cereberum7866 7 лет назад

Any idea why rpms keep going up and down and sometimes the engine stalls? The car is ford focus mk1 2002 1.6 zetec

@CraigsDIY 7 лет назад

Could be many things, could be IACV, or throttle position sensor, or something else.

@sy7zx 7 лет назад

Hello, I have a Ford mondeo titanium x 1.8 tdci 2008, when I drive normally and keep going up the rpms gradually around 2000 rpms in 2nd and 3rd gear start idleling if I keep at 2000 rpm, the car don't stop, it's look like she ask for more acceleration, or is it a sensor, what could be, it's look like a misfire but it's not, recently I change new injectors I blanked the egr valve, fuel just and only from BP as recommended for ford new fuel filter changed and clean the maf sensor new camshaft sensor genuin replaced. What could cause this symptom? thank you.

@btchides 2 года назад

i guess maybe your catlyctic system was clogged .

@thebiker3 8 лет назад

Have you had any starting issues with your Duratec?

@CraigsDIY 8 лет назад

Not other than when replacing intake components with too much solvent cleaner in them :) And I had a starter relay die once.

@jamie123b 4 года назад

If I rev the engine while idling then let go, it first goes down really low (400/500) rpm before stabilising where it should. It can make pulling away jerky. Also if the cars moving in neutral the rpm fluctuates up and down. Any idea why??

@scottykilmer1094 4 года назад

iac is getting old, replace it :) Dont attempt to clean it, or touch the solenoid like this guy did, it will mess the idle ! Just replace it with a new one and dont touch or play with the solenoid !

@mtu2305 6 лет назад

How do I have a problem in my Ford Mondeo 2006 after cleaning the air gate rose rpm reached 1

@mtu2305 6 лет назад

I'm sorry I do not speak English very well

@bob4bob3bob2bob 4 года назад

sorted cheers

@scottishbawbag315 6 лет назад

I've got a 2005 cmax, its got an electronic throttle body, does anyone know where the idle control valve is located?

@CraigsDIY 6 лет назад

You don't need an IACV with an electric TB, the TB does the same job.

@djiankennedy 4 года назад

Could I use EGR cleaner for this job?

@CraigsDIY 4 года назад

Sure.

@kodakomp 6 лет назад

hello Craig i have a 2005 focus ZX4 Duratec and when i have all the sensors plugged in when ever i drive it the car will rev to redline, occasionally drop very slowly back to idle but as soon as i accelerate it will stick again. I unplugged all the sensors one at a time to see if one was an issue and it finally stopped after i unplugged the MAF sensor down by the airbox. now it runs mostly perfect except for an occasional bogging issue in 1st pulling into traffic. What im trying to figure out is would the computer really stick the throttle open so much that the car will run away on me? ive followed your videos about the TBS and IAC as well.

@CraigsDIY 6 лет назад

Have you checked what the throttle valve is actually doing? If it's opening way up for no reason and unplugging the MAF stops it, possibly the MAF is badly clogged up or otherwise faulty such that the engine thinks there's no air coming in. When you unplug it the engine's default 'guess' is better than the bad data, but it won't be efficient. Or, maybe that's misleading, and there's a problem with the TB (can't close properly?) or the accelerator. Just guessing.

@CraigsDIY 6 лет назад

Your Focus has an electronic throttle right? in which case my videos on the IACV + manual TB are not quite applicable, although you can definitely pull off the TB and test it / clean it out - look up the proper procedures to reset it and be careful with fingers.

@kodakomp 6 лет назад

im not sure i have two throttle cables attached unlike yours i48.tinypic.com/f0xfmr.jpg like that the inner throttle cable will keep the throttle open until i turn the car off and it idles normal until i press the gas pedal, it will then go back to sticking at the really high revs.

@kodakomp 6 лет назад

also i didn't think the MAF or MAP? would have the ability to override manual throttle inputs that severely

@CraigsDIY 6 лет назад

Ok so it's the same as mine, except you have cruise control and the plastic cover. Take it all apart and check the butterfly valve movement (smooth & free), and the cable(s). The inner one is your cruise control.

@simonavetisyan757 8 лет назад

Hi tell me percentage open at idle valve %38 should be ??

@scottykilmer1094 4 года назад

Should be at 30% if there is no air leaks

@pawelw6579 2 года назад

Serious question mate, what's your idle rpm on cold engine?

@bonezbonezii7564 2 года назад

800 should be normal. I have roughly 900 on cold engine and then steadies out after couple mins.

@tonycervantes4816 Год назад

I have a 06 ford fusion 2.3 can u help me where is of location on U car of iac. Sir .. thanks 👍

@CheapBastard1988 8 месяцев назад

Isn't the throttle body on an '06 already Fly-By-Wire?

@krissyp3309 5 лет назад

Hi, I’ve got an issue with my 2015 Ford Fiesta SE, where, occasionally when I’m at a stop, the rpms sink or rev up and down, and sometimes the car even stalls on me. Seems to happen at random but always at a stop. The Car is not showing any codes. Could this process you’ve shown in this video help with this issue?

@CraigsDIY 5 лет назад

I doubt your 2015 car even has an IACV, surely the throttle is electric? Your symptoms are typical of an air leak or other problem in air intake system.

@_________________7791 5 лет назад

Craig i have the same problem as Kristen with my old iac i didnt had this problem, but since i replaced it with a new aftermarket one, the rpm drops and goed up at stop. Also the car does not idle smooth when it is in second gear and not touching the gas pedal, the rpm drops very low and than after3 seconds its rolling and idling normal but still not smooth. Could this be a problem with the new iac? Or does it needs to be reprogrammed in the ecu. I already did a ecu reset 2 days battery off. My car is a ford focus mk1 1.6 16v 2004 zetec SE

@btchides 2 года назад

@@_________________7791 same probleme here with second gear any advice ?

@_________________7791 2 года назад

Problem whas a dirty throttlebody! Clean it up with a throttlebody cleaner, after cleaning dont forget to reset Ecu, disconnect battery 6 hours. After connecting start the car up dont touch the gas pedal and let it idle for 25 minutes.

@btchides 2 года назад

@@_________________7791 thanks for reply . I think even the valve air control you cleaned it cause i guess its here the problem . While cleaning how can discharge all the car i meet + of the car with - stucking wires togerher or how ? and cover batterie away cause i neeed to reprograme

@virginiamukatuni5783 Год назад

If is ford rocam 13 eng

@mindiseverything5036 2 года назад

When i turn my.steering wheel my car wants to turn off x.x

@randyc5650 9 месяцев назад

I think the main problem is the blue drawers stuck in the intake.

@scottishbawbag315 6 лет назад

The prob I have is when driving, changing gears is fine, revs are fine, very occasionally the revs might climb, clutch us biting fine, got fly by wire throttle, its when I pull to a stop, the Revs shoot up too about 3000rpm, then return to normal idle. Can someone please, please help me, cause I'm going nuts!!!!

@CraigsDIY 6 лет назад

Vacuum (air) leak somewhere after the TB most probably.

@cicidane74 7 лет назад

i have a idle problem with 2004 2,0 Mondeo.. its idle 1500 -up to 2500 rpm also vhen drivning it will not go Down to normal idle but keeps go up betwen 1200 - 3000 rpm . i can hear some hissing i supcekt intake gasket but when i spray cleaner /startgas around manifold it doesnt change up or Down but goes to 1200 1500. when i press throtttle it goes to 2000 2500rpm it shows no fail on Scantool... ? do u have a solution maybe..i ask a mechnic, and he doesnt know, hello from denmark

@CraigsDIY 7 лет назад

Sounds like a classic vacuum leak. When you open the throttle it will run 'normally' but when closed it cannot idle normally. If you can't find a leak, a likely suspect candidate is the PCV valve hose, they fail frequently, which is behind the intake manifold (between the engine side and the back of the manifold). You really need to take the manifold off to get at it unless you have tiny hands and flexible arms in which case it is theoretically possible to access from the side once air intake hose is removed. (I am going to do a series of intake manifold & PCV videos, but they will be a few weeks from the time of writing).

@cicidane74 7 лет назад

thank you for the anwser.. i ask a friend to help me with small hands.. he is a master in itailian/french car aswell .. its the pcv hose i can se a small crack in the neck of the hose, when looking behind the manifold between cyl 3-4 .. so in this week we will try to change it ,and also checking for some vacum leaks.... an of cause the butterflie valves if there are on the 2,0 he engine, i hear its a big problem on the 1,8.. thanks Again ,, looking forward for some more of youre videos..

@CraigsDIY 7 лет назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--TR4pZdXZpg.html

@ttt69420 2 года назад

If only the lifters were shimmable as well.

@user-ly1oh6gs4w 6 лет назад

Κουβάς τέλος

@scottykilmer1094 3 года назад

The original Ford parts are on big crapp !! if you buy a new oem iacv from Ford store it dies within 3 months! Also their Fomoco spark plugs are crap too! buy Ngk laser platinum, and replace parts with a good brand like Ngk or Bosch. Anything is better than the oem ford part.