so after cleaning my IACV, my cars idle seemed to be fine for a couple hours. then after driving around for a while and the same CEL came on a p0505 which is idle system malfunction. now, everytime i clean the IACV and reset the ecu the car runs great for a while. do you think its possible that a dirty throttle body could be causing debri to get stuck in the IACV and mess up the idle again?

 

yea try cleaning the throttle body and intake pipe..... also how clean is your air filter? K&N filters when they get dirty can cause idle problems from dirtying up sensors.

 

air filter is pretty dirty and also the throttle body is too.