How-to fix a fast/high idle 80s and 90s Hondas

[@Allen-nh8rn]

Prime example of how ALL KZbin videos should be educational and to the point great video.

[@julensanchez1512]

Thanks dude, I have had problems with the car's revs for 4 years. Thanks to this video I have managed to solve the problem that was driving me crazy

[@gokart3]

This is an excellent tutorial. I've cleaned mine before, but never really understood how it worked. I had also seen a *guess* on how to set it on another video. I followed that and screwed mine all the way in, then came out 1 turn. But like I said, that was kind of a guess. It makes much more sense that it would be screwed all the way in. I might put a super small dab of high temp thread locker on there. I actually made a tool for this out of a piece of steel that will go in both notches at the same time. Works great. Thanks for the excellent video. Finding someone to work on these cars who understands them, is getting really hard to do. Nice to have a helping hand on the interwebs!!!

[@NaytonTech]

You are welcome!!!

[@icewolf4juno]

Thanks for this video, I own an 87 honda civic si hatchback and it now idles correctly. That plastic retainer had worked its way 3 threads away from the top of the valve. I knew mine wasnt performing correctly and there arent any replacements readily available so I delt with the surge for quite some time. I really appreciate it!

[@NaytonTech]

You're welcome!!!

[@adamborowiak4995]

I have the same car! Unfortunately my problem is not as simple. But I'm gonna try this again. I cleaned the throttle body & intake & we'll more power baby lol but still surging idle

[@iamsiant]

I have an 86 hatchback DX… hopefully this does the trick

[@pnwfamchan]

THE best explanation of an FITV I have heard yet.......

[@NaytonTech]

Thank you!!

[@jakeyokley7318]

87 Si here-any advice on what to try if the donut part is stuck and won't rotate? Mine looks like it's backed out quite a bit, but I can't seem to get it to move in either direction. Thanks for the great video!

[@2Drezik]

Nice vid. Is ultrasonic cleaning this an option ?

[@RedFoxStablesUSA]

You are a Cung Fu master. Thanks for getting to the point. I agree with some of the other comments. All videos should be like this one.

[@abdouallahuniverse5689]

Thanks man, i was lookkng for videos to how exactelly addjust that, but now o know thanks to you.

[@sameerali78]

One of the best vids I've seen

[@NaytonTech]

Thank you!!

[@jamesbaldwin9862]

I have an 86 civic hatchback dx. When you start it, it idles high af to start. After a bit you can blip the accelerator and it drops down to a good normal steady idle. Pretty new to owning it. Is this normal? Or is there something I should look at to adjust. No lights or codes etc. Engine only has 65k original miles on it. Thank you in advance

[@NaytonTech]

That one is a little harder, I don't think that has much for computer control, it's carbureted which is a completely different beast. As far as I know it's fairly common for those to do that - kind of an auto choke to start the car then when you blip the throttle it goes to a more normal idle. I am not super familiar with much before the 88 Civics.

[@jamesbaldwin9862]

@NaytonTechGaming thank you. I appreciate you getting back to me. Once it's warm it runs and drives great. If it ain't broke, I won't fix it until it is 😁

[@isshayasebaaly6408]

Thanks for the explanation

[@markuslappalainen7712]

Thx for this video , I have a 87 prelude with crazy idle , hope this will fix it

[@powerbuffboy9510]

Where does that hose above the sensor connect ? Mine is disconnected and i have idle problems.

[@snatchback5598]

Are the mirror block off plates for the Ef hatchback gona be available soon...?

[@NaytonTech]

Yes, I'm going to work on them during the live stream this Sunday - come join in - going to have some giveaways as well.

[@HarrisAlligood]

Thanks brother, good information 👍❤

[@kelvingillett5331]

Thank you sr well explained and to the point .

[@ahmadbajis5226]

Oh than you👍

[@holizenpelicier9861]

Hi I have a little problem with my Honda Accord 1996 so I changed the map sensor rpm still the same up down

[@happy-prepper]

Same for a 1980 accord?

[@rodolfogarza8947]

Thank you!

[@Hetzerg]

3 days ago i've changed my temperature coolant sensor at the mechanic workshop and i only realised when i got back home my rpm going up and down when i step on the gas when idling but when i dont do anything nothing happens. I've cleaned the iacv myself it gets better but sometimes it happens again. Could it be the fast idle valve problem like in the video?

[@NaytonTech]

It's possible. Idle surging with your foot slightly on the gas is usually idle air control valve, but there could also be something affecting it like the fast idle valve. Couldn't hurt to check it.

[@teaspoon87]

Is it possible to be tightened too far

[@NaytonTech]

Probably. I usually only cinch it since it's plastic, if I you twist on it too hard it will crack.

[@teaspoon87]

Could it cause it too idle lower than it should if closed too tight ??

[@NaytonTech]

@@teaspoon87 It shouldn't. If your idle is too low after this adjustment, you should use your idle screw to get it back in spec.

[@supremeryder3212]

@@NaytonTechwere is this screw

[@bahena403]

Will this also cause a super low idle ?

[@NaytonTech]

No, if your idle is too low something else isn't letting in enough air.

[@Hondaracer48]

Good explanation thank you

[@olderrol1968]

Thank you Thank you very much

[@josefuentes4981]

I change the fast idle and it’s still idling up-and-down ?

[@1celtickiwi]

good vid mate, thanks.

[@NaytonTech]

Thank you!!

[@zipcreature]

Great video!

[@eaglehigh-h3e]

Thank you for your video.

[@lfcfs]

thank you, really good content.

[@herbiedunlap5534]

I have a 98 Honda CRV my problem is it idles high at about 1400 but then it'll idle down to about 11:00 then I had a computer check on it and it's saying the O2 sensor is bad Bank 1 do I believe that or try the throttle adjustment thing you just did in this video

[@amanhasnoname6628]

Same problem. Did you solve the issue?

[@herbiedunlap5534]

@@amanhasnoname6628 no I have not...

[@amanhasnoname6628]

@@herbiedunlap5534 My next move is to change the fuel filter. If that doesn't work, I'll inspect the fuel pump. I'll change it if it's bad. After doing these, Remove the Radio(back-up) fuse for about 15 sec, minimum then put it back on. The fuse is on the Under - hood fuse box. Tomorrow and the next. Hope it works! I already did all the valves outside and inside, checked if there are any vac leaks, and even checked my throttle body sensors including the IAC and FIT valves. This is my last easy way out. I'd hate it to be a transmission issue.

[@herbiedunlap5534]

@@amanhasnoname6628 just changed the transmission!!!

[@amanhasnoname6628]

@@herbiedunlap5534 Ugh, did it help?

[@diegocamarera4332]

could someone can help me Telling me where comes from the line of coolant to the fast idle control valve I think it was canceled on my suv and I don't know where it came from. I really appreciate if someone can post an image

[@zulriffin3831]

I locked that FITV, but the rpm still remained 1800 don't want to reduce. Please help.

[@NaytonTech]

You have a bigger air leak somewhere else.

[@TePasasALV]

My car starts up after a bit and just bogs and hesitates to stay on, would it be cause of this. Its a 1990 civic witha. D16Y8 swap

[@NaytonTech]

Usually this part causes a high idle, not a low idle. I'd make sure that your idle adjustments are made once the engine is hot, they could be set too low. The bogging issue is usually fuel or timing related. You might double check that your timing belt isn't a tooth off and that your valves are adjusted correctly.

[@TePasasALV]

@NaytonTech i went today to try and install a radiator fan it literally is a project. I started it and it didn't want to start up and it was backfiring and sputtering might need a new battery But I had to leave early

[@jaimelewis4390]

If I run a long distance and I have to gear down to a stop the engine shut off

[@retloc]

Me too! Did you find the issue??

[@ycming]

my issue is , when cold if i let go of gas too quick, rev drop very low may even stall. if i dont touch gas pedal everthing is good

[@TePasasALV]

Hopefully you find the issue cause I got one this weekend and it's the same issue , it's got a d16y8 swap so idk

[@ycming]

@TePasasALV I clean the idle control valve and the fast idle valve (make sure plastic cup is tight) is a little bit better but still there

[@ahben7808]

How about if the idle going up and down all the time when cold or warm .. I got my civic 95 , and i already chnge iacv and map sensor but still same 😢

[@mk2_vrs]

Did u ever get it working I'm in the same place

[@ahben7808]

Adjust your iacv . My iacv problem . Fast idle

[@charliemartinez701]

I got a 5th gen prelude and still have this problem. I will try this next

[@black3agl3]

Why Don’t You Explain How Fix The Idle Air Control Valve

[@NaytonTech]

There isn't much to fix on them. Usually it's wiring or something else causing the idle air control valve code. The code sometimes doesn't mean it's the valve, it could throw a code because the idle is too high and no matter how the ecu controls the valve it won't come down so it throws a code because it's out of it's range. I have rarely had to replace an idle air control valve to fix the code itself, was usually something else causing the code like the issue in the video, a cracked vacuum line or bad throttlebody gasket or cable adjustment.

[@baloghbotond4250]

I have a Honda Civic EG3 D13B2 carbureted engine and after I start my car it revs at 2k rmp fine. Then after a minute it starts to rev (slowly) up to 5k rpm untill it warps up. After it warmed up it goes down slowly to 1k rpm and works like a well oiled machine......My question is...WHY AND HOW?! Got no vaccum leaks,every mechanic i took it to had no idea wtf it has. pls save me. It is me childhood dream car.

[@checcosvlogs6702]

Yo tenia el problema y lo solusione pero no era ese el problema

[@NaytonTech]

This isn't always the fix, just one of the common things to check - there are other things that can cause a high idle.

[@abdouallahuniverse5689]

But before you open the fast idle valve, after the car warmed up, you need to check if there is an air suction trough the fast idle valve whole bottom one with your finger or fingers on the throttle body after you remove the air hose, if there is air suction, so the fats idle valve is the problem, if there is not, the idle control valve is the problem, of course you need to check if there is a vacuum leak somewhere before you condemn the idle air controle valve: my 99 Honda crv was idling high at drive almost 990 to 1000 RPM, but the idle surge up and down at park or neutral, but the problem wasn't the fast idle valve , but it was the idle air controle valve, I replaced it and the problem fixed. This second time almost the same problem happen hight idle almost 970, but the idle surge up at park or neutral and stabilize back at high idle of course, I checked the air flow with my finger on the throttle body after the car warmed up and it was air suction trough the fast idle valve whole, the same suction power whether the car cold or warm, the fast idle valve is dead it doesn't move anymore, ( I knew that after adjusting that plastic cycle with flat screw driver but no change ) so I closed it and problem fixed till I buy new OEM one or buy the whole good used throttle body may be on eBay.

[@kanarimentos7056]

hi i opened 2 days ago to clean the spring jump over the tree i couldnt find.t i hace idl high up and down even the car is hot is anyway to find spring for that i am looking for spring my car honda civic 94 manual temporary i block the whole with tape the car working fine were we find spring thank u

[@NaytonTech]

Junkyard or Honda Dealership pretty much.