I just had this idle surge after replacing a bunch of original parts (breather chamber, PCV, IAC valve, intake and TB gaskets, coolant transfer tube o-rings, injector seals, knock sensor, etc.) on my 98 Civic's Y5 engine (CVT). Here's a few things I learned. Maybe it'll help someone else with their situation. Used the Lisle spill-free funnel kit to make sure I bled all air out of my coolant system. In doing the above work, I had to do a complete drain of the system (including pulling the block drain plug), so the entire cooling system (block, head, all heater plumbing, etc.) was essentially full of air when the time came to refill with coolant. Once I refilled the system, it took over an hour of idling and multiple fan cycles for the system to completely burp all the air pockets. During this process, occasionally rocking the car up and down helped dislodge bubbles, as well. I also serviced the throttle body for the first time in 22 years. The engine side of the throttle plate, and all internal passages, were filthy. I cleaned the throttle blade and bore w/red Scotchbrite and solvent until new again, taking care to remove only the crud, and no aluminum with it. So at this point, minus the crud buildup, the TB is back to bypassing proper airflow around the throttle plate. This bump in airflow also confused the computer at initial startup. Idle bypass air screw adjustment: was originally sitting at about 1 full turn out from seated. After TB cleaning, 1/4 turn out from seated was all that was needed to put bypass airflow back to where the computer wanted it. IOW, after cleaning the throttle body, the engine didn't require as much additional bypass air from this part of the system. Beyond the above, I pulled both leads off the battery, clamped them together for an hour, then reconnected them to battery. I read this somewhere online - one of the many different "procedures" people use in an attempt to reset the computer. Then turn ignition key to run position for a couple seconds. Then I started the car and left it alone for a full hour to relearn idle. Was interesting to watch the tach, and how the computer kept adjusting RPM to sort itself out. After that hour, the idle still surged very slightly, but after a couple of additional drive cycles, it's idling rock steady and the car runs like the day I drove it off the dealer's lot.

@TexasHondaChannel

4 жыл бұрын

William Hastings This is getting pinned good job!

@xHustleHaRdx

3 жыл бұрын

Sweet 👍

@xHustleHaRdx

3 жыл бұрын

@@TexasHondaChannel Definitely A Good Job 👍 👌 👏

@ashleypickle1328

Жыл бұрын

new to this but i just changed my iac for the second time. got my engine gasket fixed. cleaned the throttle while attached but i think it’s time to take off the TB, coolant, and idle bypass screw 😮‍💨😅

Broooooooooo!!!!!!!! My Honda Jazz's rpm was unstable too. About to lose my mind figuring out what's wrong with it. I followed your first step which is check the coolant, filled it to the max level and BOOOOMMMMM worked like MAGICCCCC 🤯😭 solved the issue

@dekadani5734

Жыл бұрын

replace 4 coils

@reyreyes5467

Жыл бұрын

Exactly my thoughts!!! Mine just turned on but idled weird and noticed low coolant and fuck😂😭 about to go get some and hope it works

If your car has been sitting for a long time and the idle fluctuates up and down in rhythm try putting a long screwdriver or a pipe onto the idle air control valve and tap it with a hammer while the engine is running to unstick it. This worked for me on my Honda 2.4 l

@jaysee69

11 ай бұрын

The question from a newbie is: WHERE is the IACV?

@AlexRyne

10 ай бұрын

​@@jaysee69depends on a car, google

@user-lg2us4dm4j

7 ай бұрын

​@@jaysee69near the trottle body if you still looking.

Hello, very helpful and informative. Over 40 yrs exp. & still learning, thank you.

I like the way you teach / explain things. Very clear and direct and easy to understand.. .Thanks!

Subscribed after tonight saw your video fixed the fast idle valve and fixed my surge amazing boss thanks honesty keep it up 💯💯

I want to thank you very much for a very thorough explanation of idle issues on Hondas. I I happen to have a 98 Civic EX that's been giving me problems. I just rebuilt the transmission, and replaced the engine solenoid Andy Transmission solenoid. But the engine still tumbles a little bit and so I'm not completely happy. I replace the motor mounts as well. Still I'm hoping to get better gas mileage out of it. I was averaging 14-15 miles per gallons. It used to average 24 miles per gallon (32 hwy).

I have been lazy and not checked my coolant level in a long time. That was exactly the problem so thank you for pointing this out as the most common problem.

Man thank you I have been trying to figure my car out for a while it was fast idle thermal valve it was really loose tightened it up and amazing

Great video. I did a search for this exact problem on my 1990 Honda CRX. I'm the original owner and never had this problem. It's driving me nuts. Thanks

More helpful than most vids I watch. Great job guy helped me out

Sick engine bro. I just got done rebuilding a b18b1 and when I started it, it had a surge to it so I’m hoping these steps will fix it. Thanks bro. Appreciate the video.

I really like your complete efforts and encouraging attitude

Omg you are a genius, a genius!!! My idle was doing that bouncy stuff and when i was shifting it was pulling me and choking the engine and i have replaced all the sensors on the throttle body and the iacv but bothing, and then i decided to try out to spray carbon cleaner on the manifold gasket and there was a leak, i was seeing bubbles so i am going to replace it and see if that fixes my issue, hope for the best 🤞🏻

Yes sir after swapping intake manifold from auto to manual I checked for these things just to be sure cause this intake manifold was a head ache to put on. LOL and it was a hose I forgot to connect. And it idles awesome now.

Great video covers every thing I would never thought of and appears to be very thorough. Thanks So Much :)

Dude thankyou you are the man freekin awesome . Very knowledgeable easy to follow and understand. I appreciate u big dawg

Your grinding hard bro it will pay of eventually

Thanks bro you help me and saved me a lot of money going to a mechanic and being robbed

I appreciate good content such as yours thank you man.

I like the orange bed liner job it’s amazing

Thanks for the video. Well explained, lot of information. Awesome!!

Great tips thanks you should have mention that if the car does not idle it's probably carbon build up around the butterfly valve inside the throttle body. That can be cleaned off with carburetor cleaner and some q-tips. Like I said great videos thanks for the content.

Awesome video super informative I really appreciate you taking your time out to make this video thank you blessings to you and yours💪💯

Great video and presentation. Beats all other videos on this topic bar none!

great vid!. i appreciate this because i’m new to my car but every thing seems manageable. 2 years ago i was taught how to changed my IAC and recently for the second time because of the revving and jumping/skipping in park or at a light. i thought it was my engine gasket leak but that was fixed. thought it was my spark plugs- changed those. yesterday i cleaned the throttle body but while attached, changed my air filter & tube, and unplugged my battery to reset BUT i think it’s time to take off the TB, change coolant, and adjust the idle bypass screw 😢😅. i’m determined now. ty for the tips. side tip: i’ve been reading my car workshop manual (honda crv 2001 ex) it definitely helps with diagnosing the code properly P0505

Thank you! Very great content, it helped me me a lot!

Great tips. I'm having issues with my wife's cousin crappy hinda

I had this problem. Same idling problem.. Turns out it was my idling control sensor. You defs right

Dude great information!!!

Thanks for the video ! Life saver

Very detailed demonstration❤️

Thank you for sharing your knowledge

Thanks for the video - I was having the similar problem.

Great detail info, thanks

Thanks for explain all the problems

Good video I will try it, I have the same problem

Thank you this help me a lot

Love my 4 door lx got me wherever I needed to go

thanks again for the information

Its gonna be great when you get a beater and rebuilt the whole thing. Going through each system and how to work on it. Then top it off with one of your paint jobs. Have a great year.

@TexasHondaChannel

4 жыл бұрын

Mark Stroud This was that better. I have been buying beaters and building them up for years. Most the other videos are on my other channel though

I need to upgrade to a z6 I hate my y7 the cold air intake never fits properly but great info buddy

There's one in Mt neighborhood somewhere. I call it the humpty dance. Wish I could send this to em. Every morning and some late nights.

I have a 1992 civic with that type of problem, I put a couple new sensors and start , run and go off, I cleaned the troutle intake, looking clean and still have the same problem, But Im not giving up, I like that civic , looking pretty, Sooner a later U- tube and you guys will find the fault.

Thanks very helpful 😊

Good job bro 💪 👍 🔥

Very good video thanks for share

Thanks James.

@TexasHondaChannel

4 жыл бұрын

stuart nordstrom Sounds like alternator isn’t charging the battery or your battery is trash

Helps alot!

Simple and methodical. Thanx, muchissimo ^_^

Cranks really good changed the fuel pump starter alternator coils plugs cam sensor crank sensor set the timing to make sure it’s good

Right on 🙏

Veryyyyyyyyyyyy helpful

Thank you so much for being so thorough and demonstrative could you got my subscription

I have just wiped and cleaned a throttle body on my Accord 2.4 2011 now I have idle issues - the lowest rpm I get while idling is 840 and it is constantly fluctuating between 840 and 1,100 rpms. I just wonder what could possible go wrong that makes now revs go up and down keeping the lower value pretty high at 840? The reason I went and cleaned the throttle body is that my air intake tube cracked and I had to install a new one and cleaned mass air flow sensor as well.

thank you man

Awesome thanks!

Thank you !!

Thanks for the video, any idea why on startup my idle is very low like around 200-300 but then once at operating temperature the idle remains constant at 1k

Hello, in regards of the throttle body, where does the vacuum line from the lower back side go? Thanks. I been having issues for a while now regarding leaks.

Wowww!!! Ty.godbless

There is a screw on the intake that controls your idle as well. It's on the intake right above where the rubber hose for the air filter attaches to the intake.

@SabrenaGoldmansygaux

Жыл бұрын

I replaced my dirty air filter and there was a screw in there I wondered why the idle issue happened right after that… also replaced map sensor

1994 Honda Accord Lx here and I have a massive surging/idle issues main when sitting either in park or drive at a light. Things Ive worked on and still havent resolved my issue is spark plugs, TPS, IAC valve, replaced the TB gasket (i replaced it wrong so theres a vacuum leak at the gasket), cleaned the TB plate, EGR valve and port cleaning. gonna try and clean the fuel injectors and i have o-rings for the FIT valve coming in half a day so ill be able to do that also. Wish me luck cause I bought the car with a idle problem :D

@ericktalavera9015

Ай бұрын

Have you solved it yet ?? I’m on the same boat bought it like 4 months ago too

@ianbotts3702

Ай бұрын

I just figured mine out today after chasing down every vacuum line. Same issue bouncing idol in park or neutral. It's a 15.00 rubber seal in between the brake master cylinder and the brake vacuum booster. Try this test when in park press the brake really hard and hold it.

very helpful

Hi mate, thanks for the video. I have HRV (D16A) in New Zealand. The rpms go Up and down when i accelerate (1500-2000 or 2000-2500) it doesnt do it entire rpm range when car is parked. I have checked TPS with multimeter, checked IAC valve but no gain. What else it could be??

IF I take out the FITV while still on the engine will coolant come out? I adjusted it, tightened about 2 years ago while still on the engine and worked like a charm.,.. It was hard but I took off 1 bolt then loosened the other and let the plate drop out of the way and used a flat head to tighten it up... But Now I want to take it out to clean it.... will coolant come out? Or just a little bit? Thanks for the video!!

Can you use Carb Clean to clean out the Fast Idle Thermal Valve?

I've got a 1998 honda accord lx 4 cylinder and when in park the idle is anywhere from 2000 to 2500 rpm. But what I don't understand is when putting it in drive it drops down just above 1000 rpm

I have changed all those sensors and valves in a 1992 honda civic, Im gonna check if the manifold gasket is bad. but I ain't selling the nice looking Civic , That's for sure.

great . thanks

Can u show where the vacume hoses attach to? I have two vacume porta open not sure if to connect a hose from front to back or cap them

Thankyousomuch ❤

I wonder if replacing the MAP sensor will do any good?

I'm pretty sure it's my manifold gasket but I'm having problems getting it out. I want to make sure that's the problem before I get too deep into it. That clamp that holds it onto the engine is a pain in the butt. Those bolts tend to wear down, and rest, and you will need a standard set to find that sweet spot where it fits the Bolt 9/32 or whatever it is. I have three bolts broken off at the manifold, fortunately there's enough to grip onto to get them out of the engine. I just don't want to get too far and not be able to fix the problem or find out it was something else. My car's been sitting for 2 years, every time I fix something something else would be the problem as usual

Gonna do this tomorrow it's very likely a coolant level issue. I'm getting the 900-1600 rpm revs. While testing looking it over earlier I noticed the coolant was below the min. Also when I turn on the AC the idle revs up to 2000 and stays there but doesn't surge.

@waynejordan7473

4 ай бұрын

Same here on a dc4 b18b1

Thank u sir

Good video

if you rev it and it stays at whatever RPM , clean throttle body , fix those lines aswell if loose

Where did you get your black intercooler pumping bro ?

I have a Gen. 8 , 2011 Civic and when idling with the A/C Blowing the engine idle will shudder hard as the Compressor kicks on , I suspect that it could be a poor fuel , because it seems to vary from fill-up to fill-up , so possibly to much ethanol or water in the tank from bad gasoline ?

My civic 2010 has this problem Whenever the air con compressor cuts in - the engine shudders for a second. I've cleaned the Throttle body and EGR - works only for a day and the shudder came back Engine mountings are ok and no engine vibration during stops/idle if the AC wasn't ON engine only shudders for a few seconds when AC compressor starts (RPM also dropped a hair but steady at 800 after the shuddering)

My light on the D in drive flicks on and off can you help me find this problem. So far it’s been running good just a light on for the catalytic converter which is no problem. I’d appreciate your help new to this but been watching your projects for a while

good video

My Honda is whistling I put my hand over the IAC and I Suppress the noise?

Hi there I don't have idle issues but I have a 2005 civic lx with 220000 miles that vibrate a little at idle that bothers me a little, what could cause that little that vibration. No engine check light but does have vibration and when backing up it vibrate more

Does does the the IAC valve run off coolant. I know it is there to heat the throttle so it does not freeze up. but is that valve not controlled by a servo motor, or is it some sort of hydraulic thing? It does sound like the fast Idle is controlled fully by coolant.. Reason why I am asking is I get white smoke only when idling with no check engine lights and valve lashes adjusted. Looked it up and a forum mentioned: "Default Re: 2000 Honda CRV smoking at idle whtie smoke at idle and just after pulling away from idle, exactly what i had when my Idle air contrl valve gasket had gone hard and failed! This gasket is repsonsible 2 things, the IAC valve, but also the seal between the housing, for letting coolant into the throttle body walls to assist with warm up, and if it fails like mine did, ityou end up with a coolant channel exposed to the sucton side of the throttle plate, and therfore, high suction (low manifold pressure at idle) causes it to suck hard and pull coolant into the intake. Another stupid design!" So I was temporarily going to bypass the water hoses to the IAC valve to see if the smoke goes away. Yes I am expecting a bad idle but without white smoke. If it goes away I will know it is the IACV gasket.

Good vid. I need check all this over. Got my car all back together again after painting intake and installing correct engine harness n ecu for my mini me swap n now car idles high till warm then surges all same parts as b4 with wrong year ecu n harness and ran fine b4. So think I got a vacuum leake or its freaking out bc no o2 sensor in

@BG-hg7cp

3 жыл бұрын

BTW this is brandon from alittlebitofeverything. This my other channel

My 97 accord is idling really low and rough when turning on ac/headlights, basically any electric accessory.. today I cleaned out the egr and egr passage, most of them were clogged. And the passage was very clogged. Haven’t turned the car on yet but yeah… Does anyone know when setting up a throttle body don’t you drive air bypass screw all the way down, unplug IAC valve, and then adjust the BASS (base idle set screw) to 750, then adjust the bypass screw until idle is 750-800. Is this the correct procedure? And is base idle really 750?

Have you ever done a delete of any those parts?

I've had the same issue which started immediately after I removed the BMC air filter to clean. waited for almost 10mins,as there was no difference . i had shut it down & restarted the engine. it was then back to normal. It was my first time removing the air filter, is it generally normal? btw mine is Honda City 1.5exi manual

I haven't checked all of these but I have this problem where my idle is low and sometimes the car cuts out but then I tilt the accelerator cable downwards and it works fine for the time being but what can the issue be can it be related to this aswell

1994 Manual Civic Ex, it idles at a normal 700-800 rpms but when I press the gas it isn’t immediately responsible, rpms go up after about a second and after letting go of gas the rpms drop below 500, almost as if it was going to stall.

My 91 crx looses power after it’s warmed up, kinda like it’s loosing compression, but wouldn’t it not have compression from the start? It sounds like it idles fine but it starts dying around the block, do you have any ideas?

Anyone's thoughts on puttering at idle. Sounding like it going to stall but does not. 1.8L civic.

I had a Chinese aluminum 3 core radiator that was on my dc4 integra installed from the previous owner and had a small leak not enough to be noticeable because the sits it is my toy not a daily driven one day it started idle surging thought what most though iacv so I cleaned it nothing then changed it nothing luckily I had do a Very hard U-turn because a semi was coming at me and the radiator popped on me. I put the new radiator on still have the surging switch back to the OE valve but cleaned it with carburetor cleaner and old toothbrush If you don’t use a toothbrush, basically doesn’t do anything at least on my car I also cleaned where it connects to the Intake manifold, the one closer, the hole closer to the driver side on the top is the one that was really dirty. If you don’t clean it with a toothbrush, you’ll never know and it’s hard to see unless you have a mirror or you take the intake manifold off, which is ridiculous if that’s what it is so it’s all I gotta say.

Thanks!

@emricap

Жыл бұрын

This is so wholesome

Hey thanks for the video! Really narrowed down my problem, though I have a 2000 accord and I'm having the same issue, only idles in park though. Is that the same thing going on here? Anyone with any answer please lmk

@joabtrust

2 жыл бұрын

Yes, our 2000 Civic surges when in park, put it in gear and it stops until the rpms get low or near idle.

Also egr valve and clogged ports.

Thank for the tips

I have a vacuum leak I couldn't find. The idol was bouncing up and down, it was a rubber seal in between the brake master cylinder and the brake vacuum booster. When I press my brakes hard it idles fine, and when I take my foot off it bounces.