When stopped the car drops idle and lunges on 2003 Ford Explorer

I already replaced idle control valve and pcv valve and hose. It use to just stall at stops. now when stopping idle acts funny and sometimes lunges

Asked by for the 2003 Ford Explorer
do you have a ck eng light on?
None at all I did nto even have a check engine light on when it started stalling. i replaced the ICV valve and still did not get one but I could visually see the hose compressing coming from the PCV valve and knew it had to be replaced so did it. You know it does seem to run a little better with the SC on maybe its the load factor ??
try cleaning thottle body
Will do thanks
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