Hey my car idle's at 2200 rpm somtimes unless i put it in nuteral and take it up to about 6000rpm then it dropes back down. somtimes even if i rev it taht high it still doesnt work. any idea's. its not the throttle cable ive alreayd checked and all my hoses are hooked up also . any idea's?

 

Clean the throttle body and idle air control valve.
Make sure the spring on the throttle is nice and tight.
Check for binding of the throttle plate.
Check the cold idle plunger, make sure it's retracting correctly when the engine is warm. Also make sure the cold idle linkage isn't binding up.

 

Just cleaned the tb and iacv about 5 months ago. it just started happening with in the last 2 months. ill check the other stuff though. thanks

 

I checked everything seems to be ok. Any other idea's? also i didnt mention before that sometimes if i turn it off then back on it fixes it. Im just kinda confused.

 

I know when i cleaned my IACV it did the same thing, racing idle on startup, clean it again, when you did your TB maybe you did not get everything and there is still a chunk of carbon in there. My IACV actually threw a CEL. Hopefully you don't need to buy one, they are almost $200 from the dealer.

 

im pretty sure its clean I mean i totaly had eveything off and cleaned it out and had it all off again when i took the uper manifold off and it was still really really clean.

 

My car does this sometimes, although rarely.
I sometimes start up and have an idle of 2000+ rpms.

Most recently my car was fully warmed up. I shut it off 'cause I forgot something in the house. I come back two minutes later, start it up, and my idle is 2000 rpms. I shut it off, restart, and idle was normal again.

Sometimes if it is idling at 2000+ rpms, it will suddenly come back to normal after a few minutes.

 

ya i cant figure it out really. i havent treid to much but i think its somthin in the iacv

 

what is the cold idle plunger? im having idling problems but in the reverse way the rpms will drop to 500 or so.