jordan88

hi, i have a 98 civic ex coupe d16y8, i am trying to adjust my idling screw, how do i adjust it? and what is the spec?

also how do i know if my icav is bad?

thx

=GAME=

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jordan88 &raquo;</TD></TR><TR><TD CLASS="quote">hi, i have a 98 civic ex coupe d16y8, i am trying to adjust my idling screw, how do i adjust it? and what is the spec?

also how do i know if my icav is bad?

thx</TD></TR></TABLE>

-there should be a little screw right by the tb.

-are you throwing an check engine light? code 14?

jordan88

yes, but once honda resetted, the engine light doesnt come back on anymore?

also how many turns should the screw be, cause i was playing around with it, and now i dunno how to set it back to spec.

thx

Good ol' Screwtape

You have to adjust the screw with the IACV 2P connector disconnected and the engine running at operation temperature.

And then look at your tach...or hook one up if you don't have one. And check the idle speed as you turn the screw.

jordan88

where is the IACV 2P connector? at what rpm should i adjust to?

also what about code 14, should i even care about it if the cel doesn't come back on anymore?

thx

jordan88

why need to disconnect IACV 2P connector ?

Good ol' Screwtape

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jordan88 &raquo;</TD></TR><TR><TD CLASS="quote">where is the IACV 2P connector? at what rpm should i adjust to?

also what about code 14, should i even care about it if the cel doesn't come back on anymore?

thx</TD></TR></TABLE>

The 2P connector is the only plug/wiring going into the IACV. Hard to miss.
I can't remember what the stock idle is...Somewhere below 1000RPM I guess.
Just remember that the engine has to be up to normal operation temperature before you do anything. Let the fan come on twice and that should tell you its ready. Or look at your water temp guage.

Yeah k the CEL is still thurr even if the light doesn't come on anymore.
Jump your service check connector for proof...it should still flash code 14.

Good ol' Screwtape

And I was just thinking...if your IACV is indeed broken or some wiring went loose somewhere then adjusting the idle screw probably won't do very much of..anything.

Hopefully the IACV is just durrty.

jordan88

how do i clean icav and where is the iacv, there are like couple connectors on the throttle body?

thx

jordan88

when i adjust the idle screw, do i need to put silicons in it to prevent vacuum leak? i am not exactly sure, i was like ready other threads. and some people say to put silicon to prevent vacuum leak.

thx

jordan88

for some reason doesn't matter when position i set the screw at, the idle will eventually drop back to 650-700 rpm. do anybody have a picture at of where that screw is set about to and anybody has an aicv picture.

thx guys.

EE_Chris

Is your car an auto or manual? The procedure is different because of the two types of IACVs used.

jordan88

mine is a 98 civic ex d16y8 5spd.

thx

Race Egr

dissconnect the 2 pc iacv connecter and idle should be 430-530 with it dissconnected with it not dissconnected it should be at 700-800

jordan88

is there any differences of the cleaning for 5spd and automatic?

also do i need to cover the other hole? after clean the screen with carb cleaner, do i need to wape it?

thx

jordan88

ok, i cleaned, i used carb cleaner and clean the screen, cleaned it so that screen gril thing doesn't have any black stuff on it, and clean the other hole as well, so the inside is like white now.

So i started, but when i started, it doesn't started very good, maybe caused by the carb cleaner.

but for some reason, my rpm sometimes would go lower than 500rpm when i let the gas out when putting in neutral. also sometimes the rpm would stay at 600-750rpm and suddenly would increase rpm by around 100-200 rpm.

is this normal, i dun even remember how the rpm would be b4.

help please!!!

thx guys!!!

I appreciate all the help.

civicshowracing65

i have a 97 civic ex coupe. In the haynes manual is says that stock idle is 670rpm +-50rpm

Also, it says that for our ex y8 models, you don't need to disconnect the 2p connector

hope this helps some

EE_Chris

I wouldn't put too much trust into the Haynes manual....the Helms (factory service manual) says that you DO disconnect the IACV 2p connector in order to set the base idle speed which should be around 500rpm. Upon plugging it back in, the idle should be around 700rpm.

When setting the idle on an engine equipped with a 3-wire IACV, you do NOT disconnect the 3p connector.

jordan88

is that connector connects to the black round thing of the iacv?

so i will need to disconnect it and then set the idle screw to around 500rpm right?

once i finished setting the idle screw, do i need to turn off the car before plug the connector back in or just plug it back in with the car on?


thx


Modified by jordan88 at 9:43 PM 4/6/2004

Race Egr

yes, that is the right connector after u set it just turn off ur car and turn it back on it may be good to disconnect ur battery for a minute or 2 after u do it to reset ur ecu so u have no cel stored in ur memory

jordan88

what the difference between iacv and eacv?

jordan88

i tried unplug the connector, but the car won't even startup.

also do u guys have a picture of the idle screw on the throttle body, is the line on the screw straight goes from up to down or cross left to right, cause no matter where i set it, it sit at 650-800rpm.

thx alot!!

allricedout

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jordan88 &raquo;</TD></TR><TR><TD CLASS="quote">i tried unplug the connector, but the car won't even startup.

also do u guys have a picture of the idle screw on the throttle body, is the line on the screw straight goes from up to down or cross left to right, cause no matter where i set it, it sit at 650-800rpm.

thx alot!!</TD></TR></TABLE>

bump