IDLE problem b16a2 with obx TB + p73 IM

[glen06]

just change my TB and IM for obx TB + p73 IM..before it was 1.5k rpm which is still weird..now change those TB and IM and it went 2k RPM in cold start and goes 2.5k rpm when its hot..any tips to solve this problem..


anyone who have b16a or b18c's (head) with p73 IM(intake Manifold) can post some pictures connection all of their hoses and sensor of intake manifold and throttle body just to make sure if i miss something..

thanks in advance

http://passwordjdm.com/images/products/4004_5.jpg

http://passwordjdm.com/images/products/4004_4.jpg

heres mine

http://img145.imageshack.us/img145/2273/51717809.jpg

http://img339.imageshack.us/img339/1135/85547433.jpg


you can see the adjustment that i did..

[vinnY]

iacv? throttle cable too tight?

[bennjamin]

did you reuse or even use a throttle body gasket ? You need a new one do reuse the old one it may not line up with vacuum lines/ports on the throttle body

[glen06]

iacv? throttle cable too tight?

im pretty sure its not the throttle cable..did adjust it loose and normal didnt make difference..just lower 200rpm


did you reuse or even use a throttle body gasket ? You need a new one do reuse the old one it may not line up with vacuum lines/ports on the throttle body

i know what your trying to say..i guess thats not the problem..did some adjustment as well in TB and IM gasket..coz i bore them both upto 70mm..

ill see what other people say

btw just asking have you done this and have some problem..?


just notice today it could go 4rpm idle when i hit floor to floor every gear..

guys thanks for trying to help..

[vinnY]

sticky butterfly?

[glen06]

got some answers not sure if its right..wrong setup in my dunno what sensor..suppose to suck air from IM..ima connect it with T hose to the IM and fuel regulator hose..see what happens tomorrow.

thanks guys

[Super-DA9]

maybe it's not reading vacuum correctly, pretty sure if there's a leak or incorrect reading it can stuff up your idle.

otherwise, things like calibrating the TPS? was that something you did when changing the TB? I'm not sure if that can cause this kind of issue but apparently you're meant to do it whenever you disconnect the TPS. (Throttle Position Sensor)

otherwise as vinny said maybe the IACV needs a clean. I've also heard there's a thing called FITV which plays a part in idle control, look it up maybe?

[glen06]

did change my IACV today the one works with my Si..and reconnect the sensor connecting to the blue hose(from the picture), did adjust my TPS left and right didnt fix it its just gonna be higher by 200-400rpm, see how the gasket connecting to my IM and TB they were fine not blocking anything.. my idle now is abit settle ill see how it goes tomorrow..forgot to take some picture..

super da9 do you have the same intake manifold..?i wanna see if im connecting all my hose right..btw thanks for helping

[TheSaint]

did u put on a new intake manifold gasket as well? like the hondata one?

no offence but OBX are renowned for making poorly machined parts - their could be a vac leak on a dodgy part of the TB

give the FITV a good clean out as well

[Super-DA9]

hey thats cool bro, uhh my old DA had a similar one but i've got the upside down manifold with butterflies on my b18c2, so I don't think pics will help, sorry :(

[glen06]

drove today cold start at 1.8k rpm..in 30mins drive rpm went upto 2.5k rpm..by this weekend ill try putting back my stock tb and im..see if its still gives me normal idle..

The saint : Btw i did use my stock throttle body and the rpm goes 4k in hot start..cant blame the obx..

Super da9 : I wanna see where u connect the sensor at the back of IM(the blue hose with sensor at the picture)..just worried coz now i connect it from the fuel regulator using a tri hose connector..

Thanks again for helping

[TheSaint]

what manifold gasket did you use? might be a leak against the head if u didnt use a sealing compound

[glen06]

the saint : i use a paper gasket. I reuse my old IM coz i dont have the iacv that time and make another gasket..didnt change its just this p73..but i think its the IM gasket..if not ill just use my stock TB and IM..will see how it goes..

[TheSaint]

get a hondata intake manifold gasket and use Permatex Aviation Gasket to seal it

[glen06]

ill go with paper gasket first..ill try the stock IM and p73..before i didnt have problem with paper gasket and stock IM..ill update tomorrow..ill clean the p73 and obx TB..ill take alot of photo if im doing it right..if still stuffing up..ill go for stock..and see if the idle problem is still there..

thanks for help \m/

[TheSaint]

did u use a sealant to seal the gasket or is it just dry fitted? - u may want to get some Permatex Aviation Grade Gasket Sealant on both sides of that paper gasket

[glen06]

before this happen im already using permataex gasket sealant.

anyway today

what it look like before i remove anything (throttle cable holder are already off)
http://img857.imageshack.us/img857/1156/100b.jpg

this is what it look like the gasket ive done..it doesnt look like its leaking
http://img98.imageshack.us/img98/558/200xz.jpg

head dirty around the holes means i seal them properly
http://img96.imageshack.us/img96/4492/202nw.jpg

obx TB
http://img851.imageshack.us/img851/8619/300bb.jpg

you can see the gasket that i cut around it..
http://img846.imageshack.us/img846/1484/400y.jpg

cleaning begins

head connecting to IM
http://img34.imageshack.us/img34/3949/100tj.jpg
http://img824.imageshack.us/img824/5083/101vw.jpg

clean IM
http://img801.imageshack.us/img801/7906/103ib.jpg
http://img30.imageshack.us/img30/4848/105xd.jpg
http://img5.imageshack.us/img5/5486/201mp.jpg
http://img560.imageshack.us/img560/4457/203y.jpg

OBX tb is not blocking anything + clean
http://img194.imageshack.us/img194/2127/200fe.jpg

seals starts +permatex
http://img220.imageshack.us/img220/2082/300wn.jpg
http://img62.imageshack.us/img62/8250/301wl.jpg

and yes i seal the head as well..

cold start 1.5k ticking upto 2k rpm

when its hot rpm goes up(2k) and down(1k) T_T FML..video is coming up

[glen06]

cold start

http://www.youtube.com/watch?v=NhPNcLYdWHc

when its hot

http://www.youtube.com/watch?v=MnHLkqqBlfE

[Super-DA9]

aw man my DA did this once after I adjusted the idle incorrectly! does your setup have the adjuster screw? if so here's how to adjust your idle, it's for a DC2 but with a very similar throttle body/manifold. remember to reset the ecu afterwards. hope this helps man, that looks like it must be annoying as!

http://www.team-integra.net/forum/blogs/styleteg/57-adjusting-your-idle-speed-gen3.html

[TheSaint]

thats a vacuum leak for sure man - my money is on poor machining/seal between the TB/manifold

but it could be any of the hoses, fuel pressure regulator set up wrong, TPS, FITV, or some sort of crack/problem with the manifold

take it to a desent honda mechanic - they will probably be able to help you

nice job on the manifold seal/gasket btw - looks nice and neat

[glen06]

thats a vacuum leak for sure man - my money is on poor machining/seal between the TB/manifold

but it could be any of the hoses, fuel pressure regulator set up wrong, TPS, FITV, or some sort of crack/problem with the manifold

take it to a desent honda mechanic - they will probably be able to help you

nice job on the manifold seal/gasket btw - looks nice and neat

ill check all the hose tomorrow..that fuel regulator hose will be going back where it suppose to be..as you can see the difference between the 1st and 3rd the IM got pipe were i can connect the other sensor(still dont know what it called) hope it doesnt have any crack..

got a mate coming tomorrow if we couldnt find causing this problem..oh wells back to stocky..

dunno if you being sarcastic but thank you..and for helping..

\m/

[vinnY]

the throttle body to intake manifold gasket, you sure that's the right one?
that's where I suspect the vacuum leak is

http://img194.imageshack.us/img194/2127/200fe.jpg

the right hand side of it, where you can see through the holes to the vacuum line and the coolant line
sections of the tb aren't sealing there I reckon

[TheSaint]

yeah that doesnt look like it would seal properly at all - probably where your problem is

also do you have a reason for doing all this work and than not using a hondata gasket? lol

[shepparton]

why do you have to use sealant for im gasket??

[vinnY]

^ probably shouldn't even bother, considering the petrol just eats it all away

[EK1 Civic]

I had the same problem on my ek. This is wen i calibrated the tps to try get it 4.50v W0T and 0.48v Closed. When i tried to get the 0.48v at closed with the screw under the the piece in the engine bay that lets you manually rev the car that the throttle cable being connected to. The screw was basically holding the the butterfly a touch open, i thought i had a bubble in the radiator because i removed my throttle body to clean it and removed the 2 coolant hoses connecting to it. Anyways i loosened it off and got 0.45v on closed throttle and made sure my butterfly shut at closed throttle and my issue was gone. Also bleed out the air from the radiator you could possibly even have an air bubble since u took off the im/tb.

[TheSaint]

^ probably shouldn't even bother, considering the petrol just eats it all away

if ur talking about the sealant - if u use permatex aviation grade sealant, petrol wont touch it - i used it when i did my hondata IM gasket and usdm D16z6 IM install on my D15b7 ages ago and the sealant is still there - and will still stick to my finger if i touch it lol

[TheSaint]

this is the stuff you should be using - not the silicon based crap
you can get it at Auto1 shops

http://www.permatex.com/images/DisplayImage.asp?210|/images/ProductPhotos/80017.jpg

http://www.permatex.com/products/Automotive/automotive_gasketing/gasket_sealants/auto_Permatex_Aviation_Form-A-Gasket_No_3_Sealant_a.htm

[glen06]

the throttle body to intake manifold gasket, you sure that's the right one?
that's where I suspect the vacuum leak is

http://img194.imageshack.us/img194/2127/200fe.jpg

the right hand side of it, where you can see through the holes to the vacuum line and the coolant line
sections of the tb aren't sealing there I reckon

true seen it today..planning to re-do it again next coming weekend..didnt see it (asian eyes)..tiny spot there and im hoping thats the only problem..


yeah that doesnt look like it would seal properly at all - probably where your problem is

also do you have a reason for doing all this work and than not using a hondata gasket? lol

no offence this gasket im making cos me $20 bucks..hondata gasket not sure about the price..like now i made like 5 of it and i fail (not the gasket) so if im gonna use hondata it will cost me like effkin 150+ for 5 re-do..?.. paper gasket sealed as long as you use permatex sealant..


why do you have to use sealant for im gasket??

so i wont have a leak in my IM.


I had the same problem on my ek. This is wen i calibrated the tps to try get it 4.50v W0T and 0.48v Closed. When i tried to get the 0.48v at closed with the screw under the the piece in the engine bay that lets you manually rev the car that the throttle cable being connected to. The screw was basically holding the the butterfly a touch open, i thought i had a bubble in the radiator because i removed my throttle body to clean it and removed the 2 coolant hoses connecting to it. Anyways i loosened it off and got 0.45v on closed throttle and made sure my butterfly shut at closed throttle and my issue was gone. Also bleed out the air from the radiator you could possibly even have an air bubble since u took off the im/tb.

bleed it before this starts..dunno i think Im gonna made an adjustment in TPS since its bore..ill try to get the same 4.50v open and 0.48v close..


if ur talking about the sealant - if u use permatex aviation grade sealant, petrol wont touch it - i used it when i did my hondata IM gasket and usdm D16z6 IM install on my D15b7 ages ago and the sealant is still there - and will still stick to my finger if i touch it lol


this is the stuff you should be using - not the silicon based crap
you can get it at Auto1 shops

http://www.permatex.com/images/DisplayImage.asp?210|/images/ProductPhotos/80017.jpg

http://www.permatex.com/products/Automotive/automotive_gasketing/gasket_sealants/auto_Permatex_Aviation_Form-A-Gasket_No_3_Sealant_a.htm

didnt know i use sealant so my gasket will stick and wont leak..anyway thanks for the advice..

thanks for helping

really appreciate it !

[glen06]

whats the name of this sensor..
http://img706.imageshack.us/img706/8544/massivex.jpg

where should i connect it since the p73 doesnt have pipe to connect..
http://img145.imageshack.us/img145/2273/51717809.jpg

[TheSaint]

hondata IM gasket cost me $60 off ebay and its the best IM gasket i have ever used - lowered heat transfer to the manifold by ALOT
well worth the money - also doesnt leave crap all over the IM and head like the paper ones do and it will take 5 times longer to wear out (if it ever does lol)
they are also re-usable because they are made of a hard plastic like material - not paper crap

that permatex sealant is amazing stuff =)

[glen06]

whats the name of this sensor..
http://img706.imageshack.us/img706/8544/massivex.jpg

where should i connect it since the p73 doesnt have pipe to connect..
http://img145.imageshack.us/img145/2273/51717809.jpg


any1 got idea.? still dont know where to plug these.. in p73 IM

[glen06]

hondata IM gasket cost me $60 off ebay and its the best IM gasket i have ever used - lowered heat transfer to the manifold by ALOT
well worth the money - also doesnt leave crap all over the IM and head like the paper ones do and it will take 5 times longer to wear out (if it ever does lol)
they are also re-usable because they are made of a hard plastic like material - not paper crap

that permatex sealant is amazing stuff =)

paper gasket cost me $20 bucks can make 6 IM gasket lol..haha..oh well its just give me the JOB to clean it over and over again..

[vinnY]

iacv? intake air control valve or something.

[glen06]

iacv..only got two pipes..in and out coolant to make it in the right temp..

[Bludger]

why do you have to use sealant for im gasket??should put a bit around the coolant port both sides.

[glen06]

between iacv and im..?

[Bludger]

between iacv and im..?
are you asking me?

I was answering the other guys question regarding the use of sealant on the IM gasket.

I put some on both sides of the im gasket where the square coolant port is.

[glen06]

picture of a dc2r intake manifold can provide picture..

as the title..because im upgrading my b16a2 for p73 i dont know where to connect this sensor with hose..this is a picture of my p30 intake manifold
http://img706.imageshack.us/img706/8544/massivex.jpg
ive tried connecting it here (not sure if its right)
http://img339.imageshack.us/img339/1135/85547433.jpg

if your using p73..just a photo so i know where i can connect it..
thanks in advance