DIY: Idle Relearn Procedure

[MugenReplica]

Manual approved even!

[SyckSiR]

Manual approved even!

i find u have to hold the throttle longer than that to get a noticable difference....bout 5 mins

[Danman281]

I unplugged the battery without doing this, car drives fine but whats the downside? I heard it was bad to rev up while cold. I'm sure if the handbook says its right then its right though

[RedSiBaron]

I unplugged the battery without doing this, car drives fine but whats the downside? I heard it was bad to rev up while cold. I'm sure if the handbook says its right then its right though

3000 wont hurt the engine cold, but if it worries you, maybe you just get the car up to temp before doing this? :noidea: just an idea


but you are definitely right, very bad to rev a cold engine, glad to hear someone express concern over this...it makes me sad how many of my friends rev the shit out of cold engines

[Danman281]

3000 wont hurt the engine cold, but if it worries you, maybe you just get the car up to temp before doing this? :noidea: just an idea


but you are definitely right, very bad to rev a cold engine, glad to hear someone express concern over this...it makes me sad how many of my friends rev the shit out of cold engines

we just love our cars too much

[socmex7]

3000 wont hurt the engine cold, but if it worries you, maybe you just get the car up to temp before doing this? :noidea: just an idea


but you are definitely right, very bad to rev a cold engine, glad to hear someone express concern over this...it makes me sad how many of my friends rev the shit out of cold engines

this was one of the first things my dad taught me. to NOT push the engine while it warms up.. he compared it to sprinting a 100 meter dash without a warm up, ya it's possible, but the chance for injury increases... i dunno how true that is for engines, but nevertheless i still wait till my temp gauge is normal before any type of spirited driving...

[RedSiBaron]

this was one of the first things my dad taught me. to NOT push the engine while it warms up.. he compared it to sprinting a 100 meter dash without a warm up, ya it's possible, but the chance for injury increases... i dunno how true that is for engines, but nevertheless i still wait till my temp gauge is normal before any type of spirited driving...

its very very true, especially because it has to do with the viscosity of your oil as well...first off engine parts are going to be cold, and the metal will expand as it warms, so this is of course a factor for cleanance on rings, etc...second with the oil, when the oil is cold it is designed to be a certain weight oil, colder the weather, the thicker the oil...so when you warm up the engine, the oil gets warmed up so it is the proper operating viscosity for your engine but that same oil is designed to run in colder temps, but for optimum operating viscosity it needs to be warmed up...

atleast i think i got that right, im terrible at explaining this stuff...oil is actually very very complicated and involved

[slurp812]

this was one of the first things my dad taught me. to NOT push the engine while it warms up.. he compared it to sprinting a 100 meter dash without a warm up, ya it's possible, but the chance for injury increases... i dunno how true that is for engines, but nevertheless i still wait till my temp gauge is normal before any type of spirited driving...

3000 rmps no load is not pushing a Honda motor IMHO...

[SUSHI_NE1]

So... I've done the idle Relearn about 5 times yestarday. I have replaced my IAC Valve and all should be fine, but this is where the car keeps idleing at:



It even ideals higher sometimes. What am I doing wrong?

I held the gas down at 3K till the fan turned off, then I left it alone for 5 minutes.... This didn't work.
I then looked more on Ephatch and they said there is a revised version of this where you should just let the car idle for 15 minutes untill fan turns on and car is at normal operating temperature.... I DID THIS ONE 4X! LOL

ANY SUGESTIONS?

[BeaterEP]

So... I've done the idle Relearn about 5 times yestarday. I have replaced my IAC Valve and all should be fine, but this is where the car keeps idleing at:



It even ideals higher sometimes. What am I doing wrong?

I held the gas down at 3K till the fan turned off, then I left it alone for 5 minutes.... This didn't work.
I then looked more on Ephatch and they said there is a revised version of this where you should just let the car idle for 15 minutes untill fan turns on and car is at normal operating temperature.... I DID THIS ONE 4X! LOL

ANY SUGESTIONS?

Basically, the idea is to get the car up to normal temp, then just let it sit at idle for a while. It will figure things out on it's own. I've always found it's easier to just reconnect the battery, start her up, and let her run for about 20 minutes. That should do the trick.
I think the process described in the manual is just designed to be quicker, since it's supposed to be done in a Honda service facility, and they obviously have an interest in turning jobs around faster.

If all else fails, just keep driving it; it should sort itself out in ~100 miles or so.
Finally, you said you did this 4x...did you unplug the battery before each try? If you're just trying to redo it without disconnecting power from the ECU, it's not gonna work that way. :D

[talonXracer]

Do your throttle cables need to be adjusted?

Also the idle relearn is high idle at 3K for 3 minutes(subtracting any time the fans run from that three minutes), so when the fans run, you do not count that time towards the three minutes total time.

Any codes?

[SUSHI_NE1]

Do your throttle cables need to be adjusted?

Also the idle relearn is high idle at 3K for 3 minutes(subtracting any time the fans run from that three minutes), so when the fans run, you do not count that time towards the three minutes total time.

Any codes?

I know all this... Made sure of it... But still nothing.... I was getting a P1519 with the IACV bad, but I changed it and it went away. Now the code and check engine is gone, but the Idle is still wierd. When I drive the engine feels like it wants to pull but there is some very light hesitation. I was driving my car with the P1519 code which was totally AWFULL!!!!... The engine was all over the place. could all that movement have thrown the timing or something off?

[SUSHI_NE1]

I will keep driving it to see what happens..... And I did unplug the ECU and STILL the same BS idle... :-(

[BeaterEP]

Yeah, probably just not giving it enough time once it's warmed up. I think it takes a little longer than it seems, and like Talon said, every time the fan kicks on it's not counting that space of time as "idle".
Not to worry man, either you'll get it nailed down, or it will figure itself out after a while.
Also, the hesitation may just mean that you need to tweak the throttle cable a bit.
No worries man, it'll get sorted. I have the same problem when working on my car; every little thing comes with 2 or 3 other little things that need to get figured out. Pretty soon they add up to a big thing and I'm standing there swearing and wondering how in the hell I got in to this mess!
Hang in there!

[Silvercard]

so i done that disconnect battery 10 min and shutoff then 5 min and its the same like before. 736-756rpm at 181 temp normal? same rpm with ac and temp 186 normal?