Honda Idle Relearn Procedure
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- Опубликовано: 6 дек 2018
- In this video, I show how to do an idle relearn (learn) on an older Honda. It is very easy and should be done anytime work is done on a Honda such as disconnecting the battery, unplugging the ECM (Engine Control Module), working on the intake or throttle body etc.
The ECM learns certain characteristics that help it idle and anytime the battery, ECM or throttle body are worked on, the ECM needs to relearn these operating characteristics or the vehicle may not idle properly (especially important are throttle plate angles). Many modern vehicles need some kind of idle learn procedure and a lot require a factory capable scan tool to do it.
The procedure I show covers many Honda models but there are some newer models that need to have the ECM reset with a factory capable scan tool before letting it idle for 5 minutes.
Other newer models also require the SCS (Service Check Signal) to be jumped using a factory capable scan tool after idling for 5 minutes. Newer 9 speed automatic transmission vehicles are particularly vulnerable to a high idle if the SCS line is not jumped using a scan tool. I do not cover either of these procedures in this video. I will try to cover them in a future video.
The exact vehicle in this video is a 1999 Honda Accord EX V6 sedan with automatic transmission.
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Thank you my son in law is going to take the car to the shop around the corner, He's pretty good with us thanks for all your help have a great rest of your day , I wish you you good health and stay safe. Best videos ever need to start sharing them
Thanks again.
😅
😂😂😂😂😂@@tommychatsworth629
Thank you Dave. Good job. I appreciate your videos. Have a good weekend.
Thanks!
TOOK OFF MY BATTERY THEN IDLE STARTED GOING UP TO 2500 UP AND DOWN AND EVEN REVS WHEN I DROVE DID THE RELEARN PROCESS DID THE 3000 RPM REV UNTIL FANS CAME ON AND LET IT IDLE FOR MORE THAN 5 MINS AND SO FAR SO GOOD IM UNDER A 1000 RPMS RIGHT NOW I WILL KEEP YALL UPDATED
What car do you have?
In this video, I show how to do an idle relearn (learn) on an older Honda. It is very easy and should be done anytime work is done on a Honda such as disconnecting the battery, unplugging the ECM (Engine Control Module), working on the intake or throttle body etc.
The ECM learns certain characteristics that help it idle and anytime the battery, ECM or throttle body are worked on, the ECM needs to relearn these operating characteristics or the vehicle may not idle properly (especially important are throttle plate angles). Many modern vehicles need some kind of idle learn procedure and a lot require a factory capable scan tool to do it.
*The procedure I show covers many Honda models but there are many newer models that also need to have the ECM reset with a factory capable scan tool before letting it idle for 5 minutes.*
Other newer models also require the SCS (Service Check Signal) to be jumped using a factory capable scan tool after idling for 5 minutes. Newer 9 speed automatic transmission vehicles are particularly vulnerable to a high idle if the SCS line is not jumped using a scan tool. I do not cover either of these procedures in this video. I will try to cover them in a future video.
Can this SCS line be jumped manually at the DLC? I believe it's shorting the #4 and #9 pins that jumps the SCS line. Is there a difference between jumping it manually and jumping it with a scan tool?
Can you please make a video for Honda Accord 2015 idle relearn. I clean my main throttle body and now the car is idling at 2000 RPM.
irfan ali did you ever fix your idle problem and how ?
Will this work for 09 Honda?
Good advice for sure if you want avoid problems!
Thanks for the input Mike!
Thanks lot for posting this video.
Had P0507 high idle after cleaning the throttle body, slipped my mind and moved the throttle plate (used to cable driven TBs, not electronic) tried a few tricks including the 3000 RPM for 5 minutes, the idle with cooling fans, nothing worked. Disconnected both battery terminals, left it overnight as a last resort and that seemed to reset it for me. Good cold start idle
Did it come back?
Thank you so much for this information. I cleaned out the throttle plate area on the throttle body when I changed out a bad fuel injector in cylinder 6. The car is running fine, but the idle seems to be running a tad on the high side when at idle (800-900 rpms). I'll do this procedure and get back after to see if it brought the idle down just a little
Thanks for the comment!
Roger S did the idle relearn fix your rpm issue?
thanks for the video - I moved the throttle plate to open by sticking in a rubber hose in the passage to conduct a home made smoke test (was looking for vacuum).. found the leak and fixed it but little did I know that it messed up my throttle.. going to try this tomorrow morning! Hopefully it works the same way on a 04 civic!
Definitely have to be careful moving throttle plates on certain vehicles. That Civic may need the PCM reset in order to fully relearn the idle. Thanks for the comment!
I have an 05 base rsx, i cleaned the throttle body, and i have a code p2279 which is air intake system leak. Is relearning gonna help?
I'm going to make a full flush of transmission fluid on my 2008 CR-V. Found info on forums that transmission relearn is required, because fresh fluid is much lighter and therefore clutch will experience much bigger pressure than needed because transmission has previously adopted to dirty fluid and it can lead for transmission breakdown. So does this procedure relearn transmission also, and if so, does it work for CR-V 2008? I've seen some other ways of relearning it, like shifting gears back and forth, accelerating/decelerating, pressing and holding gas pedal on the 2 key position etc., so I'm not sure which one is right for my vehicle. Thanks in advance
Thank you!!!
Hi sir ,if i can do idle relearn from my honda city 2012 model automatic same procedure with any honda car brand? Thanks much.
1993 Accord, I adjusted my idle, reset the PCM, Idle is fine after a full warm-up. Problem is the idle hunts or floats with the Headlights on. I know that there is a FA signal coming from the ALT when it detects a load. I remember my car doing this for awhile after idle adjustments in the past. I just ignored it and it seemed like it took a few hundred miles to set. Is it normal to take that long for the PCM to learn?
Belt fragments were caught in my timing belt pulley right by the crankshaft position sensor. The car cranks but won't start . Its a 04 Honda odyssey. Do I need to do a crankshaft position sensor relearn pattern with a scanner or just replace the sensor?
Good eve sir ,is it same procedure of idle relearn for honda city automatic
Just replaced the alternator and had battery disconnected for a lengthy time. I have a muzzler resistor installed for the temperature sensor to disable the VCM mode, and was wondering if this needs to be temporarily uninstalled so that the temperature sensor one will read the correct temperature to factory specifications
If car is already fluctuating RPM then what we should do. As when i start mine 06 civic first it around 1k rpm then goes up to 1.5k and then slowly come down. When i put in drive it start up like launch control 😂. What i have to do sir. Will appreciate ur reply. Thank you sir
Amen thank you sir. God bless. 🙏😃🌞
Thanks 👍!
does this relearn the crankshaft position sensor? If not, how do I do that?
Another good video...thank you. Your method is much easier. I saw some videos where you had to keep the rpm's at 3k for 4-5 minutes and then a few other steps, and it seems a bit cumbersome. So if i reset the throttle positioning sensor...then I basically let it idle for say 10 -15 minutes with all electric components off in the car?
For me when I did the throttle relearn (10th gen 2018 civic lx) I I reved it from 2-3k rpm’s for about 5 minutes about 2 times and it worked for me
( 2.0L non turbo engine) for mines
Did you ever read the PID for the Idle Air during your idle learn with the scan tool?
I wish you had made a video showing how to clean the EGR passages on this Honda V6...
Sorry I did not have time. I know Eric The Car Guy did a video on it and I remember it being pretty good.
It's super simple. Pipe cleaners & carb cleaner or WD-40 works I believe? Be thankful you didn't spend 1,100 chasing phantoms & going part swap crazy even replaced part of problem early on with new pump but needed new assembly & cost me 1,000 & 30 days to find it out. 😔😔
Fixed my problem, thank you.
Glad it helped, thanks for the comment!
Does this include for 2007 Honda Civic coupe?
Thanks
So, if you plug in your scan tool you'll see there is a data pid on the enhanced data side for Idle Relearn. The two statuses are "Learning" and "Complete.". What I've found with Hondas (specifically my 2008 Odyssey) the data PID will not go to "Learning" without doing either a PCM Reset or a TP Position Data reset via the scan tool. Additionally, I've watched the data pid sit at "Learning" for about 10-15 minutes before it changes to "Complete." Just letting it idle without doing anything prior doesn't actually relearn the idle. I found this out after cleaning the throttle body for the first time at 160K and the idle was high. I tried the method you describe, which is found all over the Internet, and it didn't work. Only doing the TP Position Data reset with the scan tool allowed it to relearn the idle. Some have said disconnecting and shorting the battery cables will do it but I found that not to be the case, as well.
The idle learn procedure that I showed is correct for most Hondas including that 2008 Odyssey but on certain models (especially newer drive by wire systems) when the throttle is cleaned it will be in a different position then when the cleaning was started and sometimes it can fool the engine computer and cause an erratic idle (it will usually set a trouble code too).
In those cases you usually have to go in with a bidirectional scan tool and clear the Throttle Position learned value using TP Position Check, reset the engine computer and then do the idle learn like I showed in video. The reason the data PID shows learning is because it MUST learn the idle after a reset and the reason it shows complete (even though it may actually be learning) is that it already has a learned value stored in memory from a previously completed learn.
@@BigDog50001 This is interesting. The factory service manual always says after most sensor changes to "Reset the PCM" and "Do the idle relearn." It says the same thing after cleaning the throttle body. So, what is the difference between "Reset the PCM" in the scan tool and removing the battery cables and shorting them together? When I did this it was at 160K when the service info says to "check idle speed" and that involves checking throttle angle, which I found high and out of spec. I cleaned the throttle body and then had the high idle afterward but set no codes. None of the Honda idle relearn instructions posted all over the Internet would work. I've since purchased a bidirectional scan tool and had to reset it that way so it's easy now but it was frustrating at the time.
Will this work for a 2016 Honda CR V? The idle is too low which causes vibrations. Thank you.
Thanks for the nice video. How to do CKP pattern learn without HDS ? What does decelerate with the throttle fully closed? Thanks
Let of the accelerator i assume currently figuring it out after changing crank position sensor
Will this work on 2011 accord sedan 2.4?.. replaced the battery at interstate and drove home right away. Not I notice that it fluctuates while at a light
i cleaned my throttle body honda civic 1996 my idling went 1500rpm. Does this method can be done with high idling?
What scan tool would you recommend to reset the idle? I have a 2010 TSX and I have been wanting to clean the throttle body but I think I need to use a scan tool to relearn the idle.
Autel MS906BT ( amzn.to/2WbPWsE ) or if you want to save some money a Launch X431 Pros Mini ( amzn.to/3aUmKug )
I cleaned my throttle body by removing it from my 2011 2.4 Accord without removing the battery cables. I performed this procedure but the idle stayed at 1100 rpms and hops to 1500 if I turn the wheel.
If this continues, do I need to unplug the negative battery terminal and try again?
What happens if you dont do this? Will there be any issues?
Good information. Now that you made it to Eric's white board of knowledge you made the big time.Lol
Woo hoo lol! Thanks for the comment Jim!
What do I do if I can't turn off the radio? I have a after market radio and I can't seem to get my 2007 Honda cr-v too initiate the relearn.
I need one for a 2000 accord 2.3l crank sensor relearn
I saw your sticker on Eric's video. Mine was there too. :) Good info here, thanks.
You are famous too now, lol! Thanks for the comment as always!
Will this work for obd1 or??????
I have a Honda Accord 2006 2.4 Vtec LX, im going to change my Thorttle Body , is this the exact same procedure i need to do , or do i have to get a scar tool from a mechanic after changing the Thorttle Body?
Thank you very much .
Typically the ECM (Engine Control Module) needs to be reset with a Honda scan tool first in order to complete the relearn process on those (after resetting ECM then the procedure in this video would be done). Otherwise it will usually set trouble codes because the throttle is in a different position than the computer thinks it is.
I have a honda accord 2003 2,4l automatic and recently the alternator went bad.I changed the diode inside and now it's working but right after that i got low and rough idle at stops...when im driving there is nothing wrong with the car but when i stop the rpm goes down to 500 and after a while slowly goes up to 600 which is still low.The rpms where around 700-750 before and 1500 at cold start, now lower..I also have check engine light and the code is P0325 Knock sensor circuit malfunction so is the bad knock sensor causing low rpms or they are not related or is it the alternator causing the low rpm and it needs idle relearn? Would appreciate any advice.
Typically, replacing the alternator will not require an idle learn on those Accords. If an idle learn is necessary, the engine computer should be reset first with a scan tool. For the P0325 code, the engine speed needs to be above 2,000 RPMs for the engine computer to test the knock sensor for an issue (freeze frame data on scan tool will show you engine speed when it set code). Those Honda alternators are two stage (high and low) and work in conjunction with engine computer and Electrical Load Detector (ELD). If any of them are not working properly it can effect how the engine computer controls the idle under different electric loads. You said this issue came up after working on alternator so I would double check my work if I was working on this vehicle.
Thank you for the answer.For the knock sensor, i remember i was driving something like 160-170km/h when the check engine light came up, will scan it again like you said. Maybe the best idea is to put a brand new alternator but do these aftermarket ones work well for the accord or it needs to be OEM. I saw your video about the alternator replacement and it wasn't OEM, is it working well?
If the re-learn is unsuccessful after replacing throttle body would that mean a possible update needed to the ecm? Also to have the computer flashed would that be a dealer only thing??
On some models the engine computer (PCM) has to be reset with a scan tool in order to complete an idle relearn. Re-flashing the engine computer does not typically need to be done for a throttle replacement and it is something that should by done by somebody familiar with the process.
Hi can you make a complete video on idle learn on honda hybrid vehicles. I have honda fit hybrid JDM
I'll see what I can do but I don't see many hybrid vehicles.
Dave if you don't mind me asking what do you use to clean the throttle body. Want to do mine and my wives and just don't want to use the wrong cleaner? Any recommendations? Thought it would be more involved after procedures on other vehicles. Thanks much ❤️️ Artie
CRC Throttle body and Air Intake Clearer is what I use. amzn.to/2QfXNn7
Do you need the scan tool for a 2012 Honda Accord to do the re learning process?
Yes, you are supposed to reset the PCM on those.
Do I need the radiator fan to turn on. The time it normally takes for it to turn on?
That typically means it is warmed up.
It mean... when clean throttle body, battery disconnect, ECM unplug or replace.... I need turn on the key, turn off all electronic items then start the car. Until the fan coolant come on ->idle relearn proceduce is complete, that right ?
Thank your answer !
On older Hondas like the one in this video. Newer Hondas may need the PCM reset with a Honda scan tool first.
Dave, I have a 2016 CRV. Is the procedure the same? I changed my battery, and have been having low idle every since.
The steps I showed are part of the process but the ECM (Engine Control Module) needs to be reset first on many newer vehicles, including a 2016 CR-V. A factory capable scan tool is necessary to do the reset. Sometimes you can get away with not resetting the ECM but it sounds like yours will need it.
Big Dog50001 Automotive k
@@BigDog50001 what about 2014 Civic? What do you recomend, i have 1500 rpm when the car is moving, in static position (0 mph) is around 1000 rpm.
After i cleaned the maf sensor and throttle body my idle is still a little high. I did let it sit for 5mins after cleaning it. Some say it will learn after a few driving cycles. What do u think?
Sometimes it can learn it on its own. When the throttle body is cleaned, the throttle position is now in a different location that what the Engine Control Module (ECM) believes it should see (and sometimes that can set trouble codes), so it needs to learn the new position. If you have a 2012 Civic (like your name says), sometimes the throttle position memory needs to be cleared and, in most cases, the ECM needs to be reset in order for the ECM to learn the new throttle position/idle correctly. This is generally done with a Honda capable scan tool.
@@BigDog50001 yea i do have a 2012 civic. It improved actually the rpm doesnt bounce off and idle is better than before and in normal condition but i still have 2 stored codes but not enough to trigger a cel. What do u suggest as a good honda scan tool?
@@12fg39 Autel MS906 or Launch X431 pros mini work well.
But what if you change the throttle body is it the same process because I have a 2013 Honda Accord I’d like to know
The PCM would have to be reset first before the 5 minute idle time for 2013 Accords.
Yooo
That beat
Scanner tps reset not needed???
What if your pin on your accelerator cable popped off and by accident, it was pulled out a little when changing the starter, Friend put the cable back in place but the RPM is high it's 2.3. Any idea's on how to get it back to where it belongs so it won't be idling so high and it will be back to normal, Please Help, We need to get this done ASAP, Thanks again Big Dog50001 love your videos.
I would probably take it back off and double check my work (routing and connections), I would also check to see if it is binding up and then try to reinstall it. If it was damaged it may need to be replaced.
IT'S in right they drove the car but it just won't go below the RPMS, When it was put back 0n my husband held gas pedal when our friend popped it in the lock.
Also when we try to start the car it has a weird noise like the new starter is bad. IS THERE ANYWAY FOR MY HUSBAND TO TALK TO YOU ON THE PHONE OR ON VIDEO CHAT SO YOU COULD SEE AND HEAR IT. TODAY IT WON'T EVEN START. PLEASE HELP US? IF YOU CAN EMAIL US A WAY TO TALK IN PERSON A MESSAGE NO ONE CAN SEE PLEASE?
Hey guys. I have a 2008 Honda Civic that is always around 850 to 900 rpm idle. I tried doing the reset with a scan tool and it goes to around 750 and stays like that only until I turn the car off. No matter how much time I let it idle, it comes back
to around 900. What can I do?
if you haven't narrowed it down by now Your drive belt could have had too much tension. Particularly if your in a region that experiences extreme temperature changes. I usually reset my serpentine to 1/2" deflection when it gets below 25 Fahrenheit
Did a throttle body cleaning on my 2011 Honda Accord. I later got a P0507 code shortly aftet. Will this relearning process potentially fix that?
Usually not by itself, the throttle plate is now in a different position than the one it already learned in memory. Usually to fix that code the throttle position learned value has to be cleared and the ECM (Engine Control Module) needs to be reset. Both of these are done with a Honda capable scan tool. Then you would do what I showed in this video.
@@BigDog50001 thank you for the reply. The relearning process you showed in this video helped solve my issue. Thank you so much.
What about newer Honda's, like 2018 accord with 1.5t
2018 Accords need the PCM (Powertrain Control Module) reset before letting it idle for 5 minutes and then also need the SCS (Service Check Signal) line jumped afterwards. The PCM reset and SCS line jump are both done with a Honda capable scan tool.
I just replaced the starter on my 2003 CRV and had to take off the throttle body to do it. Put everything back together and the idle is all over the place revving up and down. Car is throwing a P0505 and P1505. I'm having a hard time believing the MAP sensor and Idle air control valves went bad at the same time. Does this sound like an idle reset is needed? Thanks
Those codes sound like a symptom of something else going on. It is possible it needs to relearn the idle, especially if the throttle was cleaned because that would mean the throttle plate is in a different position than the engine computer thinks it is. I would definitely double check all my work if this happened immediately after replacing starter, especially looking for bad/bent connectors and making sure all electrical plugs are secure and in the correct position and everything is installed correctly (especially anything that can cause an air/vacuum leak). The idle relearn in this video is the correct procedure for those CRVs but in certain circumstances the ECM may need to be reset with a Honda scan tool first.
@@BigDog50001 Very strange but I think I inadvertently did a reset by having the hot air on with no fan on and driving it around at the same low rpm for about 15 minutes and the issue went away. I reset the error codes and the check engine light has stayed off. I still need to burp the radiator as the coolant level is low from disconnecting the line lay from the the throttle body. Will make sure I comment if the issue persists. Thanks for your advice and video!!!
I have a 1999 Crv, does this apply to my vehicle as well? Asking because I'm going to do a throttle body cleaning soon.
Yes it will work on those CR-Vs.
Did you have any problems after cleaning your throttle body? I replaced mine on my 99 crv and I'm having high idle now and seems to be running lean/rich
@@dmon1017 not that I can tell. But by Lean and Rich what do you mean?
Is there anyone who has had an issue with the idling on a newer Honda after the battery was disconnected and use a VCM Musler to disable the ECO variable cylinder management that is in the 3.5 L V6? I think the VCM Musler might be confusing the idle relearn process. Idling for a few minutes, with the air conditioner turned off, seems to have a similar effect As the engine and cooling system seem to be designed to run at a slightly higher temperature, when not using the air conditioner.
5 to 10 mins. at what RPM?
I have a problem. My car will idle perfectly when I crank it up but as soon as it gets to normal operating temperature it dies on me. it will not idle no matter what I do...
Hey bud..my 2016 crv almost cuts off when I come to stop at a light when ac is off..it doesn't do this if ac is on..it will drop to 500 rpm, shudder and tremble some..if I put it in park with ac off. It doesn't do this..as soon as I put it in gear with ac off, it starts to tremble and rpm is at 500..just bought unit, has 65,000..any ideas? Thanks.
Same problem. Can anyone help?
I know its late but did you ever solve this?
I need help, I cleaned my throttle body but once I installed everything and turned it on my car was idling in 1500rpms. It's a 2008 Honda Civic. Will this work?
Most likely the throttle body plate is now in a different position that what the ECM has in its learned memory. Sometimes this will set a trouble code (P0507/P2279). Usually in order to fix this both the throttle position and ECM have to be reset using a Honda capable scan tool.
Big Dog50001 Automotive thank you so much. I'll most likely take it to a dealer to get this done cuz I don't have that tool
@@BigDog50001 I'm on the same boat with an 07 Civic. Idles at around 820 rpm but jumps above 1k when I change to neutral (manual) coming to a stop. Is there by any chance that it would fix itself during, say, a run at the grocery store? Man with this virus situation had all the dealers/auto shops/scan tool sources closed at the moment.
Btw, love your videos. Top-notch detail & quality. Keep 'em coming and thanks a lot! Love from the Philippines.
I did it but I’m little bit concerned because the check engine light came on and it still on high rpm when the car on parking mode
Just curious, what repair or maintenance procedure did you do before this that required an idle learn and on what vehicle?
Will it work on my 97 civic?
Yes it should.
Hello there! I got a b16a2 swap and recently my idle went by itself to 900 rpm up from 750 or so. I went to the garage, where we reset it by disconnecting the battery and then we decided to set the idle to 900, since as it's summer and it's REALLY hot, the full a/c usage will weaken the idle. During the procedure I turned on the headlights momentarily, then he set the idle screw to 900 and that was it. The car idles smooth as silk in either 750 or 900 rpm. What I don't understand is that sometimes after the fan turns on and off idles at 1000-1100, then after the next fan on and off goes to 900. Happens sometimes but why? And why the idle moved by itself to 900 in the first place? Also, I forgot to mention that ONLY when the car is in working temperature and crank it: the rpm go to 1500, then drop to 1000-1100, then after 3 seconds drop to 700 or so, then go up to 900 and stay. Why does this happen? As I said it's a b12 swap, with an obd1 ecu, completely reprogrammed with the stock b16a2 settings and map. The car runs fine and strong, but why does all this poltergeist happen? Thanks a lot in advance, liked and subbed!
Check and clean your throttle body and or IAC.
You changed the setting but the computer is still going to tell the idle to go up when the fans kick on. You'd have to either put it back to the way it was or have someone reprogram the cars computer so that it no longer tells the idle to go up while the fans are on.
I did like a book says (honda tsb idle relearn, identifix, alldata, youtube- im mechanic myself) did like 10 times still wont complete idle stays 1240rpm. **** im a Big Dog too but when i try all i can and it doesn’t work-i feel like im a puppy now :)****
Try putting your foot under the gas pedal and pulling it up and see what happens.
Does this work for 1999 acura integra ls
Somewhat, you can let it idle for 10 minutes with no loads (after fully warmed up) and the ECM can learn some of the idle parameters. But, there is an idle adjustment screw on those Integras (also called an air bleed screw) that must be set correctly for the system to work properly.
Hi
I have a CRV 2010, after idle relean completed I got bad mpg and performance than before.
what could be the problem
Not sure if you did it, but to reset a 2010 CR-V the PCM needs to be reset with a Honda capable scan tool first. Without knowing what was done, it sounds like maybe there is more to this issue that is not included in the comment, like other work was done or something.
@@BigDog50001 Yes Sir I did reset with scan tool , and today I have disconnected the battery and the performance is better so why with unlearned idle the performance is better and MPG too?
@Kyle Heslip Although I rarely get the whole story in one comment, it does not sound like a "programming" issue from what you describe. Those 1999 Accords do not require the PCM to be reset for an idle learn. If you just did work on it and the trouble started right after, then I would double check all work done. If the problem is not something that was induced by recent work, then it might need troubleshooting to find the problem which usually involves a Honda capable scan tool to scan for codes and to analyze scan data.
Some knowledge of the system is usually necessary to identify a problem like that. Problem areas or things I look at on scan tool or car include: no load idle speed, air leaks, idle air control valve, Engine Coolant Temperature Sensor (ECT) readings, throttle cable, throttle body, fuel trims, idle adjust screw, 02 sensor readings, MAP voltages etc. A problem (or combination of problems) with any of those can cause issues.
Does this work on a 2021 Odyssey?
This is part of the procedure, but a Honda scan too is typically also needed for those. The PCM usually has to be reset and the SCS line needs to be jumped in order to fully relearn the idle on new Hondas. The PCM memorizes the learning status (like idle characteristics) one hour after the key is shut off on new Hondas like that Odyssey (unless SCS line is properly jumped), as long as the battery is still connected. If the throttle was cleaned then typically the PCM will need to be reset. *Sometimes* these new Hondas will relearn without a scan tool by letting it idle with no loads for at least 5 minutes or so like I did in this video (after fully warming up) and then shutting vehicle off for at least one hour which allows PCM to memorize its learning status.
Would this work for my 2013 crv?
The PCM needs to be reset with a scan tool first on those.
@BigDog50001 what's an affordable scan tool that can perform this that you can recommend?
My 03 civic with 170k miles started having idle issues after I replaced the coolant with distilled water in the process of flushing the system. Any clue?
It could be a coincidence, but there is a good chance it is likely related to work that was done. I would double check all work done, scan for any trouble codes, *make sure coolant is bled of air properly* , make sure the Engine Coolant Temp (ECT) and MAP sensors are working properly and make sure there are no air leaks (vacuum leaks).
Would this work for a 2014 Accord,?
Do I have to turn the AC on after 2
Cycles
It can, but newer Hondas like a 2014 Accord will probably need the ECM reset in order to completely relearn the idle. Need a Honda capable scan tool to reset the ECM. Also, vehicle should be fully warmed up and no loads, no A/C, nothing electrical on during the 5 minute idle period (the cooling fans may come on briefly during the 5 minute idle time but you just add a little extra time to the 5 minutes to compensate).
Why should this be done? I personally reconnect the battery start and drive. Nothing unexpected happens. Whats the idea of that process?
The ECM learns certain characteristics that help it idle and anytime the battery, ECM or throttle body are worked on, the ECM needs to relearn these operating characteristics or the vehicle may not idle properly (especially important are throttle plate angles). Many modern vehicles need some kind of idle learn procedure and a lot require a factory capable scan tool to do it.
I read everywhere else online that you have to rev the engine to 3000rpm's for 5 minutes?
The engine needs to be at operating temperature first, this can be achieved by bringing up the RPMs to 2500-3000, until the cooling fans kick in. That might be what you are reading.
@@BigDog50001 so then whats the right way?
@@vinnyf6635 what he's saying that 3K RPM is only needed to bring the car to a operating temperature of 194 degrees for his car. The reprogramming happens with 5-10 minutes of car running at operating temp. doesn't matter what the RPM is
I have a 2011 Accord 4 cyl. I cleaned the throttle body and it idles at like 1k rpm warmed up. Will this method work? If not, what will?
It might, but usually the PCM (engine computer) needs to be reset with a Honda scan tool first before letting the engine idle for 5 minutes (after warming up).
Hmmm, I have never heard of this? I've owned an Acura MDX for 14 years now, doing most work myself. I knew disconnecting the battery reset the computer, but that was it....
Some of them will have a rough cold idle or idle high or slightly hunt for a good idle if you don't do the idle learn.
It was standard at the dealership on a new vehicle to start the engine and hold it at 3k RPM until the engine was warm, then let it idle while you did the rest of the pre delivery inspection. Generally we did the same after any timing belt or other major service.
@@hondaguy9153 I just adjusted the valves on a 2000 CR-V. Now the it wants to shut off when the AC kicks on. Could this be my problem? I had to remove the intake plenum to get the valve cover off.
@@redsholsters3544 Probably a bad IACV (idle air control valve.)
Does it run rough with AC off?
@@hondaguy9153 it idles a bit lower than normal with it off. It was perfect before I did the valve adjustment 2 hours ago.
@@redsholsters3544 sounds like the valves aren't adjusted properly
hi i have a Honda sir jdm wagon 2.3 blue top 2000. it surges when i accelerate particularity when its warming up. is it worth getting a scan tool? it goes like a cut cat otherwise. the are no checklights showing
It could be multiple things but Idle air control problems or vacuum leaks are generally where I start when dealing with surging on Hondas.
As far as your scan tool question, I definitely recommend a scan tool if you can afford one, it can be very difficult to diagnose issues without one.
I may have damaged my sensor. I too cleaned my throttle body, and remember the flap shutting close once. Now when I do this, it may come down in idle slightly, but after a week, it will go back to 1500 RPMs + check engine light. 😓
Sometimes the PCM has to be reset. What is the code?
So I cleaned my throttle body and now it surges with at idle. Replaced throttle body gasket. Wasn’t doing this before I cleaned the throttle body. Any idea?
The throttle position is a learned value that the Engine Control Module (ECM) learns over time. When the throttle is cleaned the computer does not know the correct position and it can create a surging idle and possibly a check engine light (codes P0507 and/or P2279). Typically to fix those a Honda scan tool is used to clear the throttle position learned value, the ECM is then reset and then the idle relearn procedure (that I showed in this video).
Hello what Honda car is it? Will it work with Accord 2.0 EU version from 2011 year. I have some issues with stearing wheel vibration on idle. Before i had accord 7 gen and never such issues. Now when i changed car for new Accord this vibration are very anoying.
I would check all engine (motor)/transmission mounts and make sure none of them are bad.
@@BigDog50001 Engine mounts are good, already checked... Car has only 63 000 km run. The vibration are only when the engine receive normal working temperature. I cant find person who would find a solution.
I do not have access to info on EU models but this idle learn process works with most Hondas. That being said, the engine mounts on some models have oil in them and are attached to a solenoid (Engine Mount Control Solenoid) that controls engine vacuum to the mount. Generally, the engine computer supplies engine vacuum to the mount when the engine is idling to control vibration. If the solenoid/mount/or the engine computer are not operating properly it will produce more engine vibrations than normal at idle. This is where I would start.
@@BigDog50001 thank you for advice... I will be looking for solution. The main engine mount has OEM number 50830-TA2-H11. In your opinion it works like you described? Or it is normal mouny without computer controlling.
I replaced my Idle air control valve recently because of a high idle surge. I tried the relearn but it continues to surge
I also note that it's not as consistent as before I replaced it. Do you think it is relearning?
@A Lex yeah it came back but it was a faulty idle air control valve. I replaced it again and it is a steady idle now. Funny thing is the transmission went out recently at the beach so ended up trading it in for a new truck. Lol.
Yea that didn't work what else you got
I know a faster way. Unplug the battery. Touch the negative and positive wires together (don't touch the battery) and then plug back in. Problem solved
The ECM does not learn where the correct idle is for the vehicle by doing that, and there is always a chance electrical components could be damaged by doing that.
I hate Hondas.
Does this wk on 2002 accord 2. 3 vtec?
Yes.
I replaced the idle air control valve 2xs poin my 02 accord.... did this procedure.... drive it 135 miles and got home and it's still loping!!!! No CEL.... just idle loping! What do i do??????..??