doeboi365

hey wus up i have a 2000 civic si and we recently put in a clutch in the car and did a full tune up spark plugs and 8.5mm spark plug wires and did a new valve cover gasket and oil pan gasket and changed the oil in the car too.
sooo we got done with all this work and put everything back together u know bleed the clutch and all and start the car i take it for a test drive and bring it back to my house now the car has that idle problem it would sit there and bobb from 1500rmps to 2000rmps and im like ohhh here we go again got another problem it would jus sit there and go bum bum bum bum bum bum till i turn it off it seems like it does that everytime we run it and cause the idle sit sooo high i would put it in gear and it would chirp in every gear without me getting on the gas...
plzzzzz help me!!!!!

p.s. the car is all stock except the apex'i muffler and the clutch
thanks in advance!!!!!!!!!

vtecb18c

your may need a new IACV

JsEK96

re-check the valve cover gasket, and make sure all of the inner spark plug gaskets are still in there or seated proberly! Possibly a vaccum leak.

palmbayeg

test ur iacv by taking off ur intake and covering the two small holes in your throttle body with your finger (i beleive the iacv is the top one but not sure). if it is sucking air then u should take the iacv off a clean it or replace it.

JdelMsolG

im having pretty much the same issue aswell. I cant figure mine out quite.


Just check for vaccume leaks, then test the iacv, make sure the dizzy is working properly.


thats all i know to do, and it isnt helping me.


goodluck

Sterlinghondahatch

hey its you idle air screw it is on you throtle body start the car and turn the screw also check you timing every time you mess with secondary ignition. i hade the same prob. but im a auto tech so it took me a few secs to fig. it out

palmbayeg

I thought the idle air screw was in the fitv?

vtecb18c

its not your idle screw there should be no reason that it should be out of whack it you didnt touch it...all the possible problem suggestions have been listed above already..(iacv,vacuum leaks,tps, timing,ect..)try them out and let us know the end result

Sterlinghondahatch

you can have a valve cover leak and it wouldnt mean dick its eather you timing or the little screw on your throttle body it will have a little bit of paint on it from actory. mine was doing the same thing after it got hot and it was driving me nuts and it can get out of wack. also test you tps. throttle posi. sen. that will do it to. check for leaks with somr brake clean just shoot a SMALL amount around you intake and see if it changes you idle. we have a smoke mach. at the shop i work at and it will blow a little bit of smoke out of any gasket leaks in you intake.

doeboi365

ya sooo we cleaned out the iacv valve and ran it the nite we cleaned it out but the next day i was driving it home the rmps were sitting at 1500rpms sooo i talked to my friends that are mechanics and they said its ur iacv valve and its going bad sooo u gotta change it sooo i bought one it should be coming in my question is how do they go bad tho??

THC07

http://www.ef-honda.com/ben/Badidle.php

doeboi365

that was helpful i checked the vacum lines they look okay tho
wats a knock sensor?
do yall think its that??

JdelMsolG

no, knock sensors wont cause idle issues, A knock sensor will just keep vtec from engaging properly.

doeboi365

ohhh word good looks well i order the iacv valve it it should be in soon and i really hope it works cause im getting frustrated...

xelloss

seems many people have this problem. Me too, but not exactly the same.
Sometimes when I start the car (hot engine), my idle is fine, but only when I give it a step of gas and the RPM goes up a bit (let's say around 2500rpm), and it will drops down to 1000 or even lower at 700, and it goes back up slowly to around 1300...It happens usually when I let go the gas, the rpm will be dropped a bit too low..I tried to adj the idle screw (the one on the throtle body)...but doesn't really help. In fact, I'm not suppose to adj that idle screw....

well...don't know what happen then..it starts happening after I have a valve tune up...

doeboi365

here this is not my car but it doing exactly the same thing wat my car is doing

http://www.youtube.com/watch?v...lated