b18c1 head w/a port n polish/3angle valve job/adjustment & victor x mani.

its goin up n down between 15-1800.

searched for vac leaks n nothing.

cleaned out iacv n still threw codes.

cel is 1 & 14.

ive disconnected the iacv sensor n nothing happened? ive read that its suppose to lower the rpms but didnt. im goin to replace it in a few days but wondering if nebody else has suggestions? ive blocked the fitv hole on the tb while its runnin n it dies. i havent checked into the fitv but will when i change out the iacv. need HELP been w/o my car since a month ago. .

 

8.26pm.

 

9.14am.

 

did you adjust your IACV??? My Stroked out LSVTEC was doing the same thing, I adjusted my IACV and everything was gravy after that, or check the idle screw on the throttle body.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by huevosrancheros &raquo;</TD></TR><TR><TD CLASS="quote">did you adjust your IACV??? My Stroked out LSVTEC was doing the same thing, I adjusted my IACV and everything was gravy after that, or check the idle screw on the throttle body.</TD></TR></TABLE>
how do u go about in adjustin it?

 

a friend had the same problem. He installed a new throttle body on his gsr and fortgot to install the map sensor o-ring when swapped the sensor. The vehicle idled high but did not fluctuate like an intake leak. Using 3m Carb cleaner will help you locate intake leaks that are very small, all you need to do is spray cleaner on intake gaskets/hoses/sensors and listen to what the motor does.

 

With your engine warmed up (which would mean the FITV is closed down) and the IACV unplugged, it should idle ~500rpm (check a Helms for your particular motor though). So yes, you're right - the idle should have lowered when you unplugged the IACV. So you either do have a vacuum leak, throttle cable is too tight or one (or both) idle screws are misadjusted.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">With your engine warmed up (which would mean the FITV is closed down) and the IACV unplugged, it should idle ~500rpm (check a Helms for your particular motor though). So yes, you're right - the idle should have lowered when you unplugged the IACV. So you either do have a vacuum leak, throttle cable is too tight or one (or both) idle screws are misadjusted.</TD></TR></TABLE>
ill check for vac leaks once again but if the throttle cable was too tight wouldnt it just stay at a certain rpm stead of jumpin up n down? n idle screws i didnt even miss w/so is it still possible for em to b unadjusted? n once again even if they were wouldnt that just give me a constant rpm?


Modified by shifts at 3:33 PM 4/10/2007

 

9.38pm.

 

First off i would make sure the cooling system was blead. Run the car with radiator cap off and make sure all the air bubbles have come out of the system.

remove your idle air control motor and clean it out to be on the safe side! Take off the Fast idle thermovalve and make sure the fitv is not loose and adjust it if neccissary. Other safe things to check after or before if the idle does not come down all the way is idle adjustment screw, throttle cable, or tps calibration if the tps was ever removed. these are not related to your problems you have inquired about but good to check if you have stopped the surging and it just idles high.

I think your issue is the Fast idle thermo valve. This valve is in track with the cooling system and allows air to bypass just like the iacv. When the engine is cold it allows air to bypass, then once the engine is warm is closes. If it does not close the passage (due to the thermostat within the fitv) then there is some confusion between the fitv and the aicv. Like i said take the fitv apart and inspect the internals and make sure everything is tight and in place. You should replace it if it has gone bad, but most poeple just adjust that white washer looking thing inside.

 

tighten the fitv n no more surge but its sputterin.

 

Do you have any engine codes anymore? If you havent cleared the codes do so and start fresh to see if another code is thrown to be on the safe side. So you didn;t have this "sputtering" issue before this fitv issue? Does it feel fuel or spark related? what happens when you rev it up or drive it?

 

still throwin the cel 1 & 14. iacv is no good since i plugged it from the tb n it idled perfectly at 9 so waitin on a replacement...hopefully tomor. n stutterin stopped as well. new o2 will b put in as well on fri. wish me luck!

 

changed out the iacv n it worked for a few secs but cel came back on. even when warmed up i still have suction on fitv hole on tb.

 

need some help guys...

 

Maybe it was the fitv the whole time, and it was just throwing the iacv code because it was throwing it off. I would just replace the fitv with a new one if no adjustments are making the issue go away.

 

make sure that your car is warmed up first before you check for suction on the fitv. Here's this link that might help. http://www.superhonda.com/foru...94634

 

yeah its warmed up n i still get suction. ill try tighten it again this weekend n if i still get suction when warmed then ill replace it.

 

up.

 

Did you adjust the fitv yet?

 

i adjusted it n it wasnt loose but im still gettin suction after warmed up. also i noticed that my fan isnt turnin on?

EDIT: damnit. i feel dumb. two sensors were switch around in the wrong place. it fixed the cel 14 (iav) but i still have an cel 1 (o2) and n steady idle at 2k. hopefully when i get my new o2 itll fix everything!


Modified by shifts at 12:20 PM 4/20/2007

 

i adjusted the fitv. replaced it. replaced iacv. n i am still gettin suction off of the fitv when its normal temp. HELP! its a high idle at 2k. constant. also when i press the gas the rpms go up then down almost as if its gonna die then back up to idle at 2k. im to the point where im gonna take it to the dealership.

 

well if the fitv still has suction then it has to be the problem, did you check that link I posted and adjusted it? there is another step if the first one doesnt work

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shifts &raquo;</TD></TR><TR><TD CLASS="quote">i adjusted the fitv. replaced it. replaced iacv. n i am still gettin suction off of the fitv when its normal temp. HELP! its a high idle at 2k. constant. also when i press the gas the rpms go up then down almost as if its gonna die then back up to idle at 2k. im to the point where im gonna take it to the dealership.</TD></TR></TABLE>

darn it, we have the exact problem with our car, mine is at 1.1k rpm then when I rev and let go it gets choke like its catching its breath to 1k rpm.

 

my fuel hose was being pinched. after i gave it some room that problem stopped. i think its my fitv. i used a rubber nipple w/a lil hole in it n plugged it in the tb hole n it idled/ran perfect minus the cel 1. cept ive tried two fitvs n they both dont work i guess. dont feel like spendin 80$ for a brand new one.