truck runs very rough at idle when it is WARM weather only...runs fine in winter driving conditions...cleaned butterfly valve on intake manifold and changed idle temp sensor...no change...could the IDLE AIR CONTROL VALVE be causing this? and how do I get that little bugger off to clean and or replace...REMEMBER it only idles rough...5000 rpms...when the weather is hot...runs fine in cold weather...

 

engine idles rough when the weather is hot...runs fine in winter driving conditions and or cool weather..changed intake air temp sensor and cleaned butterfly valve on intake manifold...could the IDLE AIR CONTROL VALVE be the problem?...if so how do I get that valve off to clean or change out?