I've got an ls/vtec in a del sol with around a 12:1 CR. It starts up just fine, but the idle jumps up to like 1500 and just keeps getting higher and higher til around the 3k mark.

I changed out the FITV (and yeah the white plug was snapped in). The throttle body has a new gasket on it, intake mani was tightened in spec sequence from the inside out, and no fuel leaks anywhere.

I'm gonna try to change out the IACV to see if that will help it, but my main question is that I have the head milled .040", and I advanced the adjustable cam gears 3 degrees to compensate for the distance difference. Does that sound right? I used the ol' every .012 milled = 1 degree advancing.

I've ran compression tests a few times, and theyre all in the same area, and I've pretty much run out of things to try. I started to wonder if i bent a valve, but then the compression would be all fucked up so who knows.

 

could TPS be the culprit? I mean I think tps is just for the throttle opening itself, not the idle itself but ive been wrong before. christ there can only be so many things to check on the ****** but it still has a mind of its own......

oh yeah, when i put the head gasket on, a ****** cometic high compression Xtreme HG, i read on the old one's site that the oil passages need RTV or some kind of sealant, so I did around all 6 or 7 passages, whichever one it was, on both sides, because it did in fact leak before I did this. The sealant cleared up the leak very nicely, but now im wondering if i put too much of the **** on and it somehow seeped into the combustion chamber and is melted onto the pistons. I mean, there is a little bit of white smoke coming out of the exhaust, then again, if it was sealant it would probably be black huh....

seriously, this has been the longest, most drawn out project ever and its completely ******* discouraging, thats why im going on and on about every little thing. I did have it out on a test run though, and it would spin in 3rd with stock cams, so I mean thats encouraging, but wtf, im not going to drive it around and every time i push the clutch in the ****** jump to 2k.....aint happenin.....

ok now that i got that out, sorry for bitching, i love my car. i want it to be happy, and every time i start it thats all i can hear is it screaming for attention. i feel like a deadbeat dad or something.

ps-i have a slight buzz, so dont go too rough on me.


Modified by sik_sol at 11:45 AM 5/16/2006

 

Oh yeah, and the crank pulley rotates counter-clockwise, correct? So with the cam gears both aligned, and the TDC all set.....they should be adjusted to the LEFT approx. 3 notches....right?

Again, beer + high idle = me being annoying.

 

ok nothin....so no one else knows either, cool....

 

You checked many things. There has to be excess air entering your engine. Are you positive that there is not a vacuum leak? Brake booster, etc.? Perhaps you could block the ports for the FITV and the IACV with your fingers and see if the car still idles at all.

 

well, i've sprayed a few places with wd-40 to see if there were any leaks, but still nothing that would lead me to believe that there are....

i took off the old IACV, and the valve itself is stuck open. its rusted a little bit on the inside, so im gonna try that first, then probably tear it apart again and recheck it.

i had the iacv and fitv both blocked off before, and the motor wouldnt run at all. its a project i know that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sik_sol &raquo;</TD></TR><TR><TD CLASS="quote">i had the iacv and fitv both blocked off before, and the motor wouldnt run at all. its a project i know that.</TD></TR></TABLE>

That pretty much guarantees that there are no vacuum leaks.

Your IACV is a good suspect.

 

the iacv has a screw on the opposite side of where you plug it,you need a special tool to remove the screw.technically you should not tamper with this screw since it's adjusted to a normal running engine.i have tampered with it and by unscrewing it slowly the idle drops.the idle screw in the throttle only has so much room to screw it in.only giving some info of my experience!

 

yeah, well i tried checking the iacv by hooking it up to the battery to hear it click. it jus barely clicked, so im sure that thing is junk....

im wondering if maybe the tps could be outta wack too, like if that would cause the idle problem or not....

ill get back on here once i get the iacv changed out.

thanks for the input fellas.

 

ok, well i got a working iacv today and put it on the car. pretty much the same thing now with the high idle, except when the car starts it jumps right to around 2200ish and stays constant there instead of climbing up to 3kish.

when it was running, i unplugged the plug from the iacv, and the motor dropped down instantly to like 1100-1200ish, sounded a lot better, but throws CEL.

anybody know what this problem is?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sik_sol &raquo;</TD></TR><TR><TD CLASS="quote">when it was running, i unplugged the plug from the iacv, and the motor dropped down instantly to like 1100-1200ish, sounded a lot better, but throws CEL.

anybody know what this problem is?</TD></TR></TABLE>

Was the car warm with this idle?

 

It blew warm air out of the vents....its like 70 outside today, so it wasnt too chill to begin with.

But with the way its idling, if it wasnt warm the way it was running i wouldnt want it to get any warmer..... =/

 

It sounds like you need to adjust your idle and/or timing.

 

hey i took the intake off while it was idling high, and covered the lower hole for the FITV, and the idle dropped a lot.

can i just block that off??

 

This may be analogous for a FITV repair.

https://honda-tech.com/zerothread?id=699787
https://honda-tech.com/zerothread?id=1564019

 

I'm sure my timing is ok, i just got finished going over that....

i've also been looking around on here to see about blocking it off, i mean it seems to make sense. i bought the FITV 2nd hand, and the little white plug is screwed all the way back in, but for the sake of dropping my idle another 1k or so, im just gonna slap cardboard inbetween the fitv and the tb...

if that doesnt work, im gonna buy a tb with NO FITV on it, and take it from there....

 

ok, back again....

i just took a piece of cardboard and wedged it between the tb and the fitv, and no difference whatsoever.

yet, when i put my finger on the lower hole, its still sucking in air, and drops the idle. i thought blocking off the fitv would eliminate that....

the top hole still sucks in air too, and when theyre both covered, it drops some more and stalls out.

so im stumped. i thought if the fitv was covered it wouldnt suck in air anymore, and i was wrong.

any more thoughts?

 

Your whole throttle body is trashed. JK, look in buying a new map sensor, and some cam gears would help. The ecu needs to be tuned.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lek9l &raquo;</TD></TR><TR><TD CLASS="quote">Your whole throttle body is trashed. JK, look in buying a new map sensor, and some cam gears would help. The ecu needs to be tuned.</TD></TR></TABLE>

HOLY DEAD THREAD BATMAN!!

 

Seriously, dude was banned a long time ago, he's not coming back to read this.