1997 Honda Civic DX 5 speed IACV (idle air control valve) clean and re-install ( D16y7 )

REVERSE ORDER- video starts with cleaning the Idle Air Control Valve and then re-installing the throttle body and attaching all the sensor leads and hoses.

[@pc6181]

I hadn't driven my 97 Civic LX in a few months because of the coronavirus (covid-19) pandemic. The engine was idling fine a few months ago. When I started the engine recently, the engine control could not maintain a low speed idle when the engine warmed up. The engine would alternately idle high, low, high, low, ... Others have referred to this condition as "idle surge". Apparently, the idle air control valve was stuck open. To make a long story short, your video helped me to gain access to the idle air control valve. Luckily, I did not have to remove the throttle body or remove the IAC valve from the throttle body. I was able to "restore" and remove the "stuck open condition" by lightly tapping various points on the IAC valve with the end of a wrench. Thank you for your helpful video. Seeing the 8 millimeter bolt on the band clamp for the air filter case (at 8:55) was very helpful. Knowing its approximate location, I was able to locate it by using my finger, feeling around the band clamp until I could feel the head of the bolt. As shown in your video, there's no need to completely remove the bolt; just loosen the bolt until the air filter case can be lifted off the throttle body. (Actually it may not be possible to completely remove the bolt - so, there's no worries for losing the bolt.) Regarding the "idle surge condition", as the engine control commanded the idle air control valve to close when the engine had warmed up, I'm assuming that the engine control would simultaneously command less fuel to be injected. With less fuel, the engine speed (RPM) would decrease, the air/fuel mixture would increase (i.e., run lean) because the IAC valve was stuck open. With engine speed decreasing (producing less vacuum) and a stuck open IAC valve, the MAP pressure would increase towards atmospheric pressure. Somehow the engine control noticed either the increase in MAP pressure and/or lean air/fuel condition and then increased fuel delivery to compensate, thereby resulting in the high idle, low idle, high idle, low idle ...

[@fleetomeremoteelf]

This man's voice is so beautiful. It's like cashmere to my ears.

[@themiddlekingdom9121]

If Tim - Mech is a teacher or college professor, he can be a great teacher or professor.

[@grady.stu.8300]

Creepy

[@laila_ewing_music]

Lol i agree such a nice voice. Can he tell us bedtime stories on youtube too?

[@themain8453]

U are gay

[@MarcoRodriguez-lr2xt]

I just removed 2 phillips screws from sensor connector side and removed sensor. Sprayed wd40 with straw in idle control valve thru port in throttle body and spun it back and forth. once it spun freely back and forth i put everything back... car idles perfect now.

[@chrisfitzgerald2524]

Spun what back and forth?

[@EricTireguy]

The magnet piece spins as he shows in the video with the sensor removed. ​@@chrisfitzgerald2524 The thing is I did this and still getting the idle surge. Does it spin all the way around or does it stop? I bought a new walker brand and it spins without a stop. Mine spins and feels like it has a spring in side. Please can someone help. I have found alot of KZbin like to help people but only for the video not with questions. Why is that? If I posted videos and get a question if I can answer it I will. Not only here for the views.

[@daftraider856]

great video, just done the same repair/clean out on my civic and it now idles perfect, top man!

[@torryminers2177]

Got my civic back on the road thanks to this god of a mechanic👍🏼

[@seanabbey6191]

Had a surging idle on my 1999 Honda Civic, once it reached operating temperature. With only minor mechanical ability I was able to follow all the steps in this video and it worked like a charm. The idle is perfect now and it only took about two hours from start to finish.

[@tmst2199]

Anyone doing this kind of work has better than average mechanical ability, IMO. Have you looked around, lately? :-)

[@pnathaniel2059]

Thank you so much...I really appreciated the band clamp info and the throttle cable install. I think now I'll be able to remove the IACV on my 1998 Civic DX. Great instructor!

[@brianperaza4634]

Amazing video, very detailed and well explained! I'm doing this repair tomorrow and this is a great preparation. Premium content, thanks!

[@jimkader]

Thanks much for this vid. I'm a beginner at cars, so it's hard to figure the simplest things out. I used your vid to clean my IACV, realize I'd forgot to re-place the throttle cord, and use grease to replace the air intake box that was driving me crazy getting back on. Thanks for helping us noobs!

[@kudanrt]

What I did and was EXTREMELY helpful! Was use medium sized pressure pliers to break the seal on those very easy to strip screws on the iac valve. I tightened the mess out of the pressure pliers on the screw head. Turned just enough to hear that crack! Them used Philips screwdriver to remove. Easy peasy! Because YOU WILL STRIP THEM! Hope that helps! 👍👍👍

[@EricTireguy]

Do u know if the magnet that spins that's under the sensor that the connector is plugged into. Does that piece spin all the way around or only till a stop? I bought a new one from walker and the new one kept Spinning and did not have a stop. But when i installed it made the car keep idling weird. Thanks for any help

[@akbarrajani121]

I love your chill and positive attitude. Great video. I cleaned my IACV yesterday. Thanks

[@rodneyheintz44]

Very helpful information. I appreciate you posting this video. It was exactly what I needed to see especially good reminder on getting the air out of the radiator/water lines. My only mistake was that I didn't connect one of the electrical clips and got a check engine light. Once connected and check engine light cleared, the car ran well. Thank you.

[@harpolum]

Thanks for a helpful video. It would have helped me if the camera shots were much closer especially when connecting sensors, lines & bolts. Loved the detailed step by step. I’m going to give this fix a try!

[@shirleynicolson1087]

This is what the issue was with my honda. Thanks for the help.

[@zachburkett2615]

Thank you for a video that is clear and thorough. You helped me a ton.

[@joshualindsay91]

Great video!!!!! You helped me fix my 96 dx thank you kind sir

[@chaothao2206]

Yes,agree.Thank you for taking your time and affert to show how to take out,clean it and put it back in cause I know if I was to take it to the auto shop.Its gonna be expensive.

[@9011combo]

Love your ways of explaining!!

[@AdirondackNY]

thanks for the video, it gave me a heads up on what to expect and made the repair go easy

[@petergross4326]

thank you. this was my exact issue and I am happy to have saved some $ ! hugely appreciated amigo

[@asadsafdar5860]

Thankx bro ....!!!You made my day...u are best in the world . I made every try but Your video has other effect....thanx alot

[@tenkkutn]

tim the tool man! thanks for the help

[@6000pounds]

thanks dude. worked on my 98 civic dx sedan

[@fernandosantiago1679]

Great video. Nuff said

[@tedgianopulos]

Awesome tutorial! Thanks a bunch!

[@adamgier8218]

Thanks for the info! Camera work is a bit spotty though haha

[@connorseymour9751]

I just tried this on my 96 civic sedan, and mine previously had the same idle problem when it was up to temp. After taking out and cleaning the IAC, my car still has the same problem, any tips?

[@ashtonsookoo6015]

Clean fuel rail, clean throttle body, service tps

[@timpotter314]

Thanks man this video helped out alot

[@matthew1360]

great vid thank you for posting it only one out there that's very clear. lemon juice pricless

[@carlosvaldez2673]

Nice job thanks for the icav trick.

[@DjAhpah]

Is not D16y8 but awesome video regardless. D16y8 has single barrel side draft type not the down draft style.

[@michaelnugz8293]

d16y7

[@carljohnson4996]

Thanks for making this comment was about to start work but now looks like i have to do more research /:

[@bryanmartinez6600]

nice but I'm going to use throttle body cleaner as it's stronger at cleaning

[@user-ro6wc6di4z]

Great video. Much appreciated.

[@canuk88]

I did this and it fixed my idle problem. But after driving for 15 mins, the check engine light came on and it started driving really choppy- like it wasnt getting enough fuel. When i put it in neutral and open the throttle by hand (or with the pedal), it is not smooth, causing the engine to bounce when it rapidly fluctuates rpms. Any ideas?

[@medveds1]

Lemon juice, lol! Thanks heaps Tim.

[@3231]

Tim I have Honda civic 98 exi automatic same process good job

[@jefferywhitson2340]

Had low idle before, followed this step by step now when warm it surges,

[@antiricergt]

What about the gasket? Did you replace it? My 98 honda is missing bad but only at idle. The car drives great until I stop, which I have to hold the gas or the car will die. Do you think this could be the issue? When I bought it the guy installed a header and new distributor. I replaced the plugs and wires hoping to fix it but no luck. Looking for any advice this is my daily driver.

[@synapticburn]

Thanks, I did this after watching this vid, works great now

[@2koolforyou88]

Thanks

[@themiddlekingdom9121]

Hello Tm-Mech, did you post the update video after this idle air control valve cleaned ? How your Honda Civic DX works now, does it work normally without any problem after you had cleaned up the IDLE AIR CONTROL VALVE part ?

[@claytonabetxh5467]

I have a 97 civic ex and. When my ac is on. It idles like it gonna stall. When i turn my ac off. My cars fine. If i I clean it like you just did. Would that make it normal. ?(

[@DK_427]

There’s a little plate next to your left hand side. Do you tighten that plate and do you leave it at certain position ?

[@Formulac3o]

Hi did you drain all the coolant to do this job?

[@herbois-et2uh]

you doing this but what is the symptoms cause for you to take this out. what the symtoms

[@1010Huey]

Excellent video. The lemon juice was brilliant! The coolant lines that attach to the iac valve @ 4:46, what size are they? What diameter?

[@MrKredinger]

Very helpful

[@michealrobinson9778]

A light spray of lubricant inside of the iacv would keep it turning freely

[@saltysweatyhands]

is there anything i need to look out for when I take out the throttle body?

[@Sportek24]

I have an idle problem like surging up and down I replace every sensor in the intake and still have the same problem. I don't know what to do now I have a Honda Civic 1998 DX D16Y75 speed

[@dasmalas9960]

Helps alot, thanks!!!

[@manuelg2667]

I did the same work perfect but now my check engine light came on and it's blinking and when I'm at a stop light it wants to turn off?

[@ThePrelude1999]

Hey guys just want to put this out there iac valve Automatic and manual are different Even though they look the same On a d16y7 I converted my car from automatic to Manual I had to change the iac valve To get it idle right

[@ShadowedSoundsRecords]

this is d16y7

[@stonemaster1217]

Sounds good

[@AqueleDoHonda]

mine is the same , but i thought that maybe could this be the problem and even though it was semi-stuck it was not the problem if you see my video would you be able to tell me what's wrong with it?

[@orozcocris93]

does this car have the valve lash adjusted and timing belt in good condition? I ask because I notice my idle is the same as yours where it has that little almost like a rocker arm is receiving spark or something. I might take a video and see if anyone can tell me if it is normal

[@anonymousw9335]

I did the cleaning and now it idle too high now and don't want to go low to normal please help

[@thomasitsasecretlol1988]

Soooo not true I have a 99 Honda Civic I took it off and installed it without ever removing my throttle body

[@howardgilbert9862]

Really? How'd u do that cuz I need to do mine and would rather do it that way honestly

[@mrsayao]

Thanks to this video I went ahead and removed the screws on the green casing to expose the rotor and was able to free up the seized shaft with carb cleaner. I guess my first cleaning wasn't as thorough and the problem eventually returned. I actually took out the screws on the other end of the shaft too, but I was careful with making sure everything went back together properly. Based on other pictures of the IACV, I just made sure the two adjustment screws were dead center. Under the cap at is a coil/spring of some sort. My guess is that it provides resistance to the rotor when the coil is energized. Any idea why this would be adjustable? I've scoured manuals, but nothing focuses on a teardown of the IACV, moreso just the replacement of it. Thanks again!

[@silasaqui6823]

Did it fix your problem?

[@candaceberkeley4592]

mrsayao Honda Civic 2009 car will not move when put in gear

[@noteregz]

appreciate the video

[@subliminal521]

Do you have to bleed all coolant or oil for this?

[@chrisfitzgerald2524]

Soo what about the other type of iacv..

[@zackaryalbright6422]

how was the car running before that repair? i have a 98 civic lx that when cold runs fine with an idle problem while stopped, but when warmed up it revs up and drops while driving (as if ur hitting the gas and letting go) and has no idle problem when stopped. put a new head on it due to a timing belt snap and trying to figure out what needs to be done.

[@bryanmartinez6600]

Zackary Albright how many miles did it have when it snapped my 00 LX has 135k and has original timing belt

[@zimzar]

Thank you

[@JoseAyala-lo7qx]

dont reuse gaskets, theyre one time use only. once the seal is crushed, itll never seal the same, just saying.

[@mushy18100]

Jose Ayala agreed!

[@carljohnson4996]

Its cheap at auto zone anyway but thanks for the info i was going to re-use the same gasket

[@thrty8street]

How long did the whole entire job take you, start to finish?

[@miguelrodriguez-rl5qp]

I messed with the idle position now I’m in deep. What can I do?

[@divines-solar-2061]

The 2 hose under it what are those going?

[@soapyclean172]

I appreciate you

[@masdaeng6432]

what is the price for iacv?

[@tmst2199]

Any idea why there are coolant lines coming into the throttle body?

[@TWIRKNOLOVE]

If you live in an extremely cold area, air rushing thru the throttle body can freeze things - worst case scenario, freeze the throttle open. The coolant heats up the throttle body to prevent this. Nearly all cars have this.

[@d.porcell4204]

good video. 👍

[@silasaqui6823]

How did you take out the 2 screws on the iacv to get to the magnet?

[@knipsi22]

They suck. I cut a slot in them and removed them with a flathead

[@chatomoreno8027]

Nice! Can i use strawberry banana juice

[@robox_autoshine]

I did everything but when i put everything back but the car idle rpm goes up and down :(

[@markdrobinson99]

Did u find out the problem

[@robox_autoshine]

@@markdrobinson99 yes it was the gasket of the throw body..we put back the old one ..the new one was a little bit different autozone give us the wrong one

[@segalservices274]

Niceeeee.

[@MendingSilence]

I can't find mine on my 1990 Honda Civic

[@axenz1]

Hi, just found this video... I accidentally removed 2 screw at the back of IACV without marking it...so now I lost my original setting :(

[@bryanmartinez6600]

axenz axtiz well that sucks

[@MrEntTv]

You want to use a multimeter and follow the specs to where it should be at idle. Then adjust to closed with no slack. Your idle control valve supplies air. Tighten up and Your done.

[@maryallen3398]

it's d16y7

[@Luisgarcia-uz5uk]

But good info

[@historyhunter5215]

DRY IT FIRST!!!!!!!!!😂

[@nickritter1992]

would this cause a very low idle speed, about 400rpm and sometimes stalling ?

[@TimeRelease_1]

Seems like it cause im having a similar problem

[@yvonne2546]

Not a mechanic but to me your problem sounds more like a fuel (too much) or air (not enough) problem. Tim demonstrated how dirt and corrosion (from coolant) can cause the idle to increase on cold engine starts. So we Civic owners with high RPMs on cold starts need to go in and clean up certain parts (throttle body and idle air control valve) to have the RPMs return to normal. Still you might want to clean the same parts. But also check to see what code(s) your engine is throwing. To read the codes, you need an OBD sensor. I think I read somewhere that you can upload an OBD sensor app to your smartphone. Or borrow/rent one. Good luck!

[@AlexTmetal]

Idle* air control valve

[@6000pounds]

I posted a brief summary of what you did on my instagram my name is "jake carlton howie"