Idle air control valve
0.5 BAR
Joined: Jun 2003
Posts: 70
Re: Idle air control valve
I have a B16a2 engine in a 93 civic Si controlled with a P28 ecu! i have an idle problem to my idle is sturging from 500 to 900 i have tried all the things i have see in this post and nothing have work. I have unplug my negative wire from the battery so the car run only on the alternator and now the idle is ok when i replug the battery it restart idling bad! does this mean then my alternator is bad or something?
1.5 BAR
Joined: Jul 2003
Posts: 706
Re: Idle air control valve
The LS in my CRX does the other way around. When it's cold, the idle is real low, but when everything's all warmed up, the idle (if not adjusted) wil keep rising to like maybe 1500s. What can cause this. My TB gasket is new, BTW...
0.0 BAR
Joined: Jan 2005
Posts: 7
Re:Idle air control valve
Originally Posted by crx88Si
when the idle goes up and down when warmed it means you have a vac leak.
0.0 BAR
Joined: Feb 2005
Posts: 0
Re: Idle air control valve
i only hvae one hole in my throttle body and if i close it the crazy idol goes awaycan i just like jb weld a little plate where the eacv went and adjust tighten my throttle cable to open the plate? i know i have a small vac leak now because of my pcv valve allows all vaccume to come through and the hole on the valve cover sucks like crazy. should it do that?
1.0 BAR
Joined: Jan 2005
Posts: 319
Re: Idle air control valve
my car does the same ---- but its about 500- 2000 .. but i have my iacv blocked off and still have the y7 mani with ob1 havent gotten around to swappin the intake when the motors going soon. also i think my throttle linkage is all gummed up cuz when the idle stick high.. i just hit the pedal real quick and the idle sets back down to normal .. weird stuff
0.0 BAR
Joined: Jul 2005
Posts: 21
Re: Idle air control valve
my dohc zc sounds like it misses at idle, makes poping nosies during idle, replaced and cleand IACV, replaced and cleaned TB.
also if i lightly put my foot on the throttle, (just to open maybe a mm or so,) it sounds like its not getting enough fuel, runs rough till i press more, could that be the TPS?
also if i lightly put my foot on the throttle, (just to open maybe a mm or so,) it sounds like its not getting enough fuel, runs rough till i press more, could that be the TPS?
0.5 BAR
Joined: Nov 2004
Posts: 122
Re: Idle air control valve
My car started doing the idle from 1k to 2k after I ran zdyne on it for 1 day. put the factory pm6 back in and still has the problems changed the idle air control valve with a used one but sprayed wd40 in there, after i installed it I didnt reset anything but i also had the screw under the TB turned up to idle it higher mayne i just gotta reset it, and turn all the specs back to factory. I'll let yall know how it works out.
Idle is solved it was the idle air control valve
Idle is solved it was the idle air control valve
0.5 BAR
Joined: Sep 2005
Posts: 116
Re: Idle air control valve
its not a vac leak...if you take the idle air valve off of the manifold you will see that its basically two ports for oil and air and than a big flat head screw on the top...usually that screw comes loose from vibration and the air vavle cant open all the way....so just take it off and tighten the ---- outa that screw and it will be fixed
done it many times
done it many times
1.0 BAR
Joined: Sep 2005
Posts: 199
Re: Idle air control valve
My hyundai accent has a idle speed actuator. Ever since I boosted my idle was screwed! It would idle between 1200-2500 depending on how it felt and bounce around all the time. I just removed it , plugged the vacuum lines and left the acuator in place plugged in eletrically so I wouldnt have a cel. Then I used the screw on the TB to adjust my idle and its been fantastic. Idles EXACTLY as it should , never bounces around and improved my gas mileage greatly! All with no cel ;-)
1.5 BAR
Joined: Jan 2005
Posts: 732
Re:Idle air control valve
Originally Posted by junkyard racer
I didnt read all of the posts before, but heres how I fixed my IACV. wait until the engie is cold. Unbolt the IACV but DONT take it off. You might wanna disconnect the sensor, it just makes things easier. Get a pop, soda, coke, beer whever you want/whatever you call it, can. cut it so you have about a 3'' by 2'' rectangle. make sure its clean. place the can between the IACV and the intake manifold. it will take care of your problem. (its workin for me) it bacially bi-passes the IACV. you may have to re-adjust your idle elsewhere, but it works!
http://www.villagephotos.com/viewimage.asp?id_=8740435
http://www.villagephotos.com/viewimage.asp?id_=8740435
matt
