Idle Problems please help

I have a 1999 honda prelude sh and the idle is going up and down from 1k rpm and 2k rpm i think its the air bleed screw because i replaces the idle air control valve but it still didnt stop, once it idles for a little while it idles between 1000 rpm and 1300 rpm and the throtle looses its sensitivity any suggestions please help

idle air control valve. check plugs and especially if u have a vacuum leak

Coolant temp sensor. Guarenteed fix!

I have a 97 Honda Accord 2.2L VTEC. When I start the car & leave it for a while around 20min it starts to idle from 1k to about 1.5k then back down to 500 then it almost cuts of goes back to 1k then dies out unless I press the gas peddle. I've checked the EGR valve & cleaned it & it works fine had a tune up about 1 month ago. I get a code of P0505 looked it up & it was teh Idle Control Valve how can I fix this problem?

take off the iacv and clean it out

how do I clean it out? what type of tools or spray will I need to clean it with?

throttle body cleaner iacv is on the intake manifold heres a link of what it looks like





http://cgi.ebay.com/ebaymotors/90-91-honda-accord-OEM-idle-air-control-valve-IACV_W0QQcmdZViewItemQQcategoryZ33557QQihZ008QQite mZ180219572369

Thank you for your help.

no problem just let me know how it goes

At how many rpm's should it idle?

650-750 rpms

I am the proud original owner of a 1988 Accord (143k miles) and just had the carburetor replaced. After the work was done, she was idling at about 750, then would sputter down to 500, acting like she was stalling out. My mechanic upped the idle to about 1000. Should that solve the problem, or could something else be going on? Also, how often should I have the fuel filter replaced? Thanks.

upping the idle wont solve the prob it will just mask it make it unoticeable but if it performs well then leave it but if the car didnt have that prob before then the prob lies in the mechanics workmanship im not trying to badmouth any mechanics im just saying but as long as you are happy with it then great