I just recently put my swap into my ek and everything went smooth. When we started the car it had a idle problem which we figured was the ECU since i was using my single cam. I recently bought a obd2 p72 A04 ECU(GSR) and the motor ran more healthy but still had that reving up and down problem. we scanned it and it told us IACV which was recently replaced.. now before we replaced it the only problem I had was the Idle going up and down quickly. Once we replaced the IACV we started to hear a loud sucking air coming from inside the throttle body. the Top hole not the bottom. once i cover the hole up with my finger the car idles like a baby and runs mint. WHAT DO I DO?!!? please help

H23A blue top vtec completely stock!

NOTE :

intake mani was never touched or removed
throttle body gasket is good and we also used gasket sealant
Flushed radiator coolant and made sure no bubbles inside.
plugged up any unnecessary holes
changed MAP and TPS censor

HERE ARE SOME PICS

THE MOTOR


THE CENSOR I CHANGED


THROTTLE BODY


THE TOP ONE IS SUCKING A LOT OF AIR and when i put my finger on it the idles goes mint


here is a video it may help
http://s205.photobucket.com/albums/b...=VIDEO0015.mp4

 

You need the iacv plate from rosco racing and a prelude or accord iacv from a obd1 car i had exact the same problem. or your spacer the middle thing from your inlet manifold is bad a vacuum leak.
And one more thing your inlet mani has air injection holes near your injectors the inlet to that holes is one hose or something like that and it is located under your 3th or 4th inlet port on the engine side. im not that good in English because im from holland :lol:

 

yea, if pluging that hole helps, just get a vaccum plug from your local parts store. I do believe that top one pulls air in for your idle adjustment screw. on my GSR i have my Idle screw ALL the way down, bocked off the iacv and it still surges....

 

well i just got input about my IACV wiring and i need to convert it from a 3 wire job to a 2 wire IACV plug

 

ahh, yea there are write-ups all over for that.