Recently, my car has began acting a bit strange at idle. When the engine is warm, the rpm's go up to about 1800 and back down to 1000 or so over and over. I took off the idle controller and cleaned it out, reinstalled it, and nothing changed. Perhaps its faulty ? I've heard this is a problem with honda's, my toyota I had awhile back did the same thing but it eventually quit. Any input ?

 

Adjust ur fit valve is under the throttle body has a brass cover open it hand tighten it all the way that's it it should fix ur issue

 

cant seem to find it, could you describe it a little better or direct me to a photo ? do I need to take anything apart to access it ?

 

I found it but there is nothing to adjust on it...

 

So....adjusted that ring, tightened it down, cleaned that and the Idle Controller....the problems purist.

 

My bad its easier if u remove the throttle body its right under it remove it clean the throttle body really good. Then remove iacv and same thing u clean it let them dry up that's wat I did to mine and it fix the issue

 

Just replaced both...and the coolant temperature sensor...problem is still there.

 

Have u tried bleeding ur coolant lines their is a bleeder in the thermostat housing if u open it slowly air will come out do it until coolant comes out then check make sure is leveled

 

mine started surging the same as yours and bleeding the air from the coolant system fixed it

 

alright....had it confirmed its a bad intake mani gasket...not a big deal but enough to disappoint me....and yes, i bled the cooling system.