please lets all have a big ozhonda hug and perhaps we can make out. oi who cares, just pull the plug, and take off the battery cables.. what ever! its all good
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please lets all have a big ozhonda hug and perhaps we can make out. oi who cares, just pull the plug, and take off the battery cables.. what ever! its all good
read through everypage i jus had a look under the bonnet of my ek4
which fuse is the ecu i cant figure it out SORRY FOR THE NOOBNESS :$
so can u do all this in the morning when the engine is still cold, or do u have to have warmed up the engine ? coz the motor tends to rev high during idol wen its cold, will this affect the outcome?
yeah i do have the same Q as toy civic
Guys. Pull the fuse for 30sec OR If you can't find it pull Battery Plug for 10mins.
Then start car - Idle for 5 mins or so until the car is warm. Do not touch the accelerator whilst waiting.
Take car for a drive, revving thru slowly up to redline and let it go down slowly. Prob do this a few times just for goodluck. Then you should be fine.
I don't think i can say it any easier.
I unplug both terminal + and - for 15 mins? will that do the resetting?Quote:
Originally Posted by JasonGilholme
yeah it will vippy84
hmm bit confused which fuse do i take out i dont have a 7.5a
and wen u said slowly rev to redline is that for everygear ..
you dont have to rev your car to red line.
just let it idle in Park for AT or N for MT for 10 min ( untill the thermo fans kick in twice ). make sure there is no electrical load on the car. Turn off all accesories, inc the radio.
k thx for clearing that up
so u noe which fuse to take out ..
i have a dc5r
Ok I've trolled through this DIY, with one other person having the same question I have.
When removing the fuses (in my case EK1), is it the "FI E/M (ECM/PCM)" and "Back Up" fuses as listed in the owner's manual?
Nice and easy question...
Cheers
When resetting the ECU does the engine already need to be warm or can it be done cold?
Just take the battery out thats what i did,Quote:
Originally Posted by VTAKYO
Cant seem to find anywhere what each pic means on the engine fuse box :S!
IF anyone knows or got a link pm! THANK!
hmm.. seems to b a bit of confusion here.
this is my gist on things...
1. find ur fuses (check a manual) and unplug em for anything up to 10mins.
or
2. disconnect both battery cables for anything up to 10 mins
or
3. unplug the connector for the ECU itself, for anything up to 10mins.
once done reconnect whateva u did, and idle engine for 10mins, turn all accessories off (ie radio).
after 10 mins of idle take car for drive, changing gears at appropiate times/speeds (usually found in honda owners manual) do this for some time ie 10 mins, so ECU can learn air/fuel ratios for normal driving.
when satisfied, if u want to, drive ur car like its stolen, so ecu can learn ratios when engine is under strain (ie when racing).
can be done on cold or warm engine, or a sunny / mild day.
somebody correct me if i m wrong.
(times may vary due to personal preference)
Just a warning to those who are unplugging the fuses, in particular the backup fuse which also serves the Radio...
Doing this fried my Alpine head unit completely for some reason. I had to purchase a new head unit in the end.
Beware.
hmm... sounds like u got a power surge, but dont know y, unless u had the ignition in the on or acc position.
i dont kno about alpine, but my pioneer has a fuse (round glass type) behind the headdeck on the power line aswell (in a black case lookin thing).
if urs has it, maybe u blew it.
if not maybe as a precaution u better cut ur power line and put another fuse in there, just incase.
so by resettin ECU, will it stuff my headunit settings, and aftermarket alarm system up? or they have absolutly nothing to do with it ?
resetting the ecu will stuff up those things if u disconnect the battery terminal. or if those things are in the line which the fuse is off.Quote:
Originally Posted by andiiso
would this be worth doing if i just have a really basic SRI and cat back exhaust with stock cat?
well i know which 2 i have to take out so i dont have to disconnect the battery terminal but how do i know if my alarm is in line with the 2 ecu fuses ?
as far as i m aware, any change to the intake which allows more air than what the ecu is used to, needs to have the ecu reset so i can learn/adjust to the new setting.Quote:
Originally Posted by hondavti25
i guess it was a professional install? have a look 4 the control box and c where they pulled the power from. if not try it neway, but know how to reset the alarm first.Quote:
Originally Posted by andiiso
sorry guys but any more specifics on which fuse to take out on an ej8? and how do i know its that fuse?
only thing i can find fuse wise is under the steering wheel but theres a fair few there just dont no which ones which ?
cause it says so on the fuse box lid.
ECU Fuse
Back up Fuse
Its not hard guys. come on.
sorry man i wasnt thinking i found it so if i use pliers or something like that and take the fuse under E / M and back up out ill be sweet?Quote:
Originally Posted by JasonGilholme
yep.
Also, don't worry if you have an alarm. if it is connected up to the ECU fuse its gonna be the same as if you disconnect the battery anyway. Just make sure your car is unlocked when you do it and you'll be fine.
yeah i dont have one so ill be all sweet thanks and does it matter if that car is just warm when i do this or it has to be bone cold?
nah doesn't matter if its warm. or not.
I'd probably just do it one morning before you go to drive the car to work or something.
Just wake up and pull those two fuses, go start to get ready eat breakfast etc, pop the fuses back in and start her up. Let her warm up a bit then drive her to work nice and slowly going through the majority of the rev range.
yea say my car is unlocked, and i go reset my ECU, and it does have effect on my alarm,, yea i will still be able to go and get in car n start it but how do i lock it afterwards ? etc.
the same way you did before. Nothing changes.
Its exactly the same as if you get a flat battery. You replace the battery and everything is back to normal.
oh i see, i thought the "back up" fuse is so that if my battery goes dead things will still be remembered, and i thought since resetting means taking that fuse out too, then i thought nothing in relation to the ECU will b remembered unlike the dead battery but yea, im dunno, but now sounds a little more reassuring to do this ECu thing, thanks
theres no other power supply in your car apart from the battery.
THe backup fuse for the ECU is to prevent any damage to the ecu if an electircal short occurs. It has nothing to do with maintaining power in the event of a flat battery. :thumbsup:
hey is it bad to drive a little more 'spirited' after youve done an ecu reset.....my car was driven by a grandma before i picked it up, so im told doing a reset would be useful.....and i want to know if i should drive conservatively after a reset...
don't bother with reset dude.
and have u even bothered to read this thread ? it is quite detailed.
@ Nick_sixx
i find if i reset the ecu i get my fuel efffiency back, but if i flog it after reset, after 2 weeks of flogging it, i need to reset again as fuel effiency drops dramatically.
after reset i use 6.25 - 6.60 Litres per 100km (thats 15-16km per litre)
after flogging it i use 11+ litres per 100km (thats 9 km per litre)
(i base my results on 80% highway driving 20% or less round town as i travel 50km each way 2 and from work inbetween towns - sux working in the country)
Sorry to revive a fairly old thread but relevant to my question,
Flogging = revving it out hard to 6k revs gears 1,2,3?
If so, oops....
Time to reset again???
Quote:
Originally Posted by DC4Integra98
lol yea floggin = driving the car hard, ie racing.
cant hurt to reset the ecu, u can only end up saving on ur fuel bill ;-)
Yeah I will try it out. I only flogged it for a good 10-15mins or so hopefully I don't have to go resetting it and hopefully driving it easy can fix from now on. (I'm lazy)Quote:
Originally Posted by Simmo2302
its funny that you say to resaet your comp as you make mods, because the computer will re learn the new mixtures and what have you............
well if u was me, u just answered ur own question, it dont matter what mixtures and previouse settings it has, if its a self learning computer, it will eventually re tune itself alone to the new mods..........and then it will also have the base map, which in fact is prob a good thing and wont run like shit on different weathered days, coz by u reseting it with mods and crusing around, it will take all data from that drive, then every time u have different weather or drive it differentl;y, it will be learning again.........so my opinion, no need to reset if its al;ready a self learning ecu........................
So are DC4 ECUs self learning by any chance? I really don't want to be driving around with a terrible fuel economy especially with fuel prices these days...Quote:
Originally Posted by IEVAQ8
i believe so................
even if that is tru and the ecu will re-learn to be fuel efficient, how long will that take ? it may take a week of bad fuel economy b4 it goes good again.
i have a 2002 civic and when the ecu is out, i can go thru up to $10 of fuel a day, thats shocking compared to what it usually should get.
i'd rather reset the ecu and get good fuel economy straight away, than wait till the ecu re-learns to be fuel efficient again.
well thats just my 2cents neway
so how to reset ECU for prelude 99 BB6 anyone?
can i just disconnect the battery (remove the + or - terminal?) and then turn the car on after that and let it idle for 10 mins, will it be the same shiet, instead of going to take out the ECU fuse from the fuse box
its the same for every car
you can either remove the fuses, or disconnect teh battery fior 10 mins
connect back up, turn on, let idle for 10 mins
im more inclined to remove the fuses, but im just unsure which fuses they are on the bb6
so by disconnecting the battery, means unscrewing the bolt on the negative terminal, and then taking the lead off rite??
yes.
the fuses will be labled ont eh fuse box. if you are still unsure, take sme pics and someone should be able to show you
** why is the prelude bonnet so farken heavy -_-**
ok anyway, so i am just going to pull the 7.5A / Clock radio fuse for 3 mins and then idle for 10 mins, thats all ay. sweet thanks/
that wont do shit bro
the clock radio fuse is not the ECU fuse
just rip off the battery terminal for 10 minutes
then idle for 10 minutes
hmm then whats everyone going on about in this thread of the clock radi 7.5A fuse :S:S:S
which fuse is the back up ECU
i don't really want to disconnect the battery as i cbf to restore the headunit settings, and i don't know if theres a code on it, bought my car with it.
** wouldn't this be it, except there 10A is our 7.5A i think
http://www.preludeonline.co.uk/4ws-reset.html
btw nothing is labelled ecu reset
take a pic of the fusebox and fuse diagram. like i said before
someone will tell you
Ok here are the pics, as you can see they are blurry as cause its my fone camera..
well the 2 brown fuses are the 7.5A.. one along with the rest is the clock radio one, and the one the just under the is the other 7.5A (under the 10A hazard)
http://i13.photobucket.com/albums/a2...10-08_1542.jpg
http://i13.photobucket.com/albums/a2...10-08_1543.jpg
well you dont remove the clock radio one. as thats jsut for the clock and radio. if you do that, youll **** the radio, and maybe need a code. its jsut like disconnecting the battery.
Oh ok, now im confused, one person is telling me that i remove the clock 7.5A one, and your telling me it won't do anything lol.
wells, i guess if i remove the fuse it would be easier then d/c the battery.
what does the 7.5A do thats not labelled do if i remove it
why 10 minutes??.....10 seconds is enough to do that
talk about digging up the dead...
cant even see the pics anymore