it won,t start with out my foot on the gas. and when i leave it there for 1 to 3 minute.s then i can feel the gas kick in and go on high idle like 1,200 rpm. and the rest of day say it,s parked for 2 hrs. or so when i start it .it will fire up on high idle 1,200 rpm. and i have taking the I.A.C. off and cleaned it. also taking throttle body off one can cleaner all passages and compressed air. i do have extra IAC from scrap yard and looked very new . i will put on tommorow and try. also it started when i did the hughes plenum job. al so tryed clear computer. other wise run fine just won,t start on high idle in mornning. thanks. and to your ? i feel if it were warmer it might idle at idle.