anyone know how to lower the idle of a rb20det?

Discuss the RB20, RB25 and RB26 series engines.
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MyLiLsKyLiNe
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Car: 89' NISSAN 240SX (HB)

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my idle sits at 2500RPM need any advice to what to do.


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BoostFab
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click on this image above

Acecool
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Car: 1989 Nissan 240SX Hatch Pig KA24E 126k

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At the throttle body, there will be a cylinder attached at the rear of the intake manifold... on the passenger side of the car unless you have a RHD swap, there will be a screw..... righty = lower, Lefty = Raise...

Make sure the TB closes fully as well..

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MyLiLsKyLiNe
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Car: 89' NISSAN 240SX (HB)

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thanks will try it out but its not a RHD. by the way would u happen to have a set of RPS13 kouki tail lights or sale?

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driftingmy240sx
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Car: 1996 Nissan 240sx rb25det

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never turn the screw on the throttle body!!!! on the iac ther is a black screw that should be turned with the car running at operating temp and the iac disconnected. if it is not done this way you will have an erractic idle or other problems later.

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MyLiLsKyLiNe
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is there a way u can tell me exactly where the black screw is located? diagrams or layouts of some kind?

Cjmartz2k
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Hey moran, even if you are stupid enough to post up a "wtb: kouki s14 tails" thread, why wouldn't you combine all your threads into one instead of making 16 seperate ones?!?! I know where the screw is and know where there is a picture, but I'm not telling. BTW, if you take the advice of somebody above, you might find it.

Man there have been a lot of stupid new people on here lately.

rb25drag
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He just asked a question. Why the Blow Up?

craz4240
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Cjmartz2k wrote:Hey moran, even if you are stupid enough to post up a "wtb: kouki s14 tails" thread, why wouldn't you combine all your threads into one instead of making 16 seperate ones?!?! I know where the screw is and know where there is a picture, but I'm not telling. BTW, if you take the advice of somebody above, you might find it.

Man there have been a lot of stupid new people on here lately.
Although I don't agree with the brash reply I do agree with the premise....I have seen more BS threads where ppl could have searched instead i the last month then ever on here.

Even I have posted replies on 2 threads of how to set the idle switch...and check for vacum/boost leaks.

Search please.

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mello88
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Someone should write a book about RB motors... With advice on how to tune them, troubleshoot problems and maintain them properly... Then this book should be converted to PDF and made available all over the internet.

MyLiLsKyLiNe you get no help from me. Try searching first and posting less crap to our forum.

lazyboi444
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That Book already exist HINT HINT...FSM If most would sit down and just read thru it alot of questions would be answered. I think the reason all these stupid questions get asked is because they know what has to be done but they are not a fully 100 percent positive they trust themselves...So they come on here and asked it a thousand times lol...I do it alot when i'm not fully forsure...I double double check somebodies answer....And plus this is what this place is for searching and asking questions...I Think they should take on my method which is study thier car or motor up and down before they take on a project and know what the hell they gettin into...It helps (sorry for the dr.phil explanation)

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nizmo zilvia
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Car: 95 240sx w/ S14 SR20 Blacktop

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mello88 wrote:Someone should write a book about RB motors... With advice on how to tune them, troubleshoot problems and maintain them properly... Then this book should be converted to PDF and made available all over the internet.

MyLiLsKyLiNe you get no help from me. Try searching first and posting less crap to our forum.
I have a site in my sig which I created. Its not done yet because Im lazy and barely done any work, but once its done I will link you guys to it. It will have all the necessary information you need to get your RB up and running. I believe this will help everyone and be a easy find for those who don't search.

Someone should show him pictures or tell him how to do it again with pictures though. I say this because the next noob that searches will get his hopes up by reading the title and it ends up being full of BS and bashes. Post the answer hes looking for and lock it. Problem solved.

As for me. I would help you man, but I don't have any pictures so it'll be easier to see. But the answer is above if you read it. Good luck.

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MyLiLsKyLiNe
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thanks i appreciate the help. some people think they know it all then be jerks to the ones who know as much as they did when they first did there project swaps. we all own nissans here why fight or argue or put down the little guy were a club not a bunch of kindergardeners. learn to respect others ideas and or questions we have problems with.

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nizmo zilvia
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I know but you need to search first and **** like that man. No one likes to see 10000 threads when you can have just one thread.

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MyLiLsKyLiNe
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well all i asked was if anyone knew how too lower the idle. and yes i tried the screw on the lil resevoir pack behing the intake manifold. buts its all the way in . no luck so far . i tamperred with the idler but it runs like crap. then also too the lil sensor pack right next to the throttle body. no such luck. could it be internal? maybe a new throttle body?

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mello88
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MyLiLsKyLiNe wrote:thanks i appreciate the help. some people think they know it all then be jerks to the ones who know as much as they did when they first did there project swaps. we all own nissans here why fight or argue or put down the little guy were a club not a bunch of kindergardeners. learn to respect others ideas and or questions we have problems with.
It's not that hard to figure out, is it?

Some people deserve help. They read the FSM, they search the archives and read up on other boards, then if they still can't find the answer they need they post up a well written thread asking specific questions.... Guess what everyone tends helps those people because we've all been there. And in return those kind of people usually help others when they can. Most of us on the RB board fit this description and part of what makes NICO rb board so useful.

Then there are other people who have obviously never downloaded the FSM or read through the archives... They come up on a super common RB problem and immediately post up some incoherent nonsense, asking vague questions that have been discussed and answered a million times or are clearly spelled out in the FSM. And as much as it pisses me off, 95% of the time these kids tend to be RB20 owners for some reason. This is where you're fitting in right now, and is the reason why you're not getting the respect or help you think you deserve.

Some words of advice... Before you create any new threads, download the FSM and read the whole thing. Then read through the archives and learn as much as you can about the RB engines. Believe it or not we have all had the same issues you are having now and there's lots of threads about these common problems. Research on Skylines Australia and Skylines Down Under (along with RaceBread, 240sx forums RB subforum, etc). Finally if you absolutely have to make a post, type it out clearly so we can actually read it and understand what you're asking. Maybe if you try this, people will actually want to help you and not dismiss you as some n00b kid who does nothing but post garbage.

craz4240
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MyLiLsKyLiNe wrote:well all i asked was if anyone knew how too lower the idle. and yes i tried the screw on the lil resevoir pack behing the intake manifold. buts its all the way in . no luck so far . i tamperred with the idler but it runs like crap. then also too the lil sensor pack right next to the throttle body. no such luck. could it be internal? maybe a new throttle body?
I'll bite,first of all if you can turn that screw all the way in with no change you have a vacum or boost leak somewheres.Also it sounds like your idle switch needs to be set...you don't do this by screwing with it you do this by measuring resistence and setting it within spec...your fsm explains it and there is also a DIY boost leak tester thread on this site if you use the search opion.

Start there and then continue.

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MyLiLsKyLiNe
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finally someone with some good advice than a jerk off comment of non of true things bout me. well i'll try it. thanks.

BlAcK95sE
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Car: black 95 240sx se

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MyLiLsKyLiNe

Member

Access Level Normal User Permission Level Normal User Full Name LAKISHA Email Address [email protected] Location VENICE LA AMERICA Age 10 Car (HB)

are you old enough to drive???

s14 2510's
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he he

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MyLiLsKyLiNe
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of course im old enough to drive genius. lol ur the only un-educated guy who actually looked at my profile and think im foreals. all my info on my profile is all false except for the car. im 20 and i am not a girl (LAKISHA) lol dude ur so ....... i cant say it but WOW.

BlAcK95sE
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MyLiLsKyLiNe wrote:of course im old enough to drive genius. lol ur the only un-educated guy who actually looked at my profile and think im foreals. all my info on my profile is all false except for the car. im 20 and i am not a girl (LAKISHA) lol dude ur so ....... i cant say it but WOW.
im uneducated but i am a genius. i don't know how that works but ok! im so what?

i think you should be banned for the simple fact that you made a profile based on false info..

rb25drag
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govtworkhorse
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MyLiLsKyLiNe wrote:of course im old enough to drive genius. lol ur the only un-educated guy who actually looked at my profile and think im foreals. all my info on my profile is all false except for the car. im 20 and i am not a girl (LAKISHA) lol dude ur so ....... i cant say it but WOW.
oh snap

But seriously, why would you falsify ALL your information? I mean, I guess I get the name part but the age and sh1t!?!? THEN, tell us your real info, canceling out the whole point. Please explain you're reasoning.

Also, because some of things you say surprise me, are you sure your idle is that high? Are you going by the stock tachometer because that thing will lie to you after swapping in a 6 cylinder.

BlAcK95sE
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it is easier to be a scamer that way.

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MyLiLsKyLiNe
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no i dont go by the original tach from the KA. I have the RB (RPM) tach swapped . but it sounds loud for like 1,600 from the RB tach. wierd? but we also attached a small tach to the TOMEI boost up ecu i have and it shows 2,500 rpm. so its like which one is right? by the way what happened to your 240sx? did u make that dent? (just wondering)

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govtworkhorse
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nah, I made the mistake of buying it that way. Lost my a$$ putting a new quarter panel on it. Then a kid busted out my widows so I found a shell and swapped the motor. Now I'm unsure as to what I'm going to do with the other shell

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MyLiLsKyLiNe
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damn that sucks. yeah i bout my 89' HB for 1,600 with the passenger rear fender smashed in.

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MyLiLsKyLiNe
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i know this is way off too say but HAPPY NEW YEAR! everyone

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jt15833
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i <3 nico


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