Ok car runs fine but with spring and tune up time I decide to run a can of throttle body cleaner through the intake to see if I can clean out any junk. Now comes the problems..since then when I start the car cold the idle imediately drops to 1000 rpm which I think is a bit low for warm up, then when hot and driven idle will hang a bit around 1500 when I come to a stop and eventually find it's way down to about 1100 and stick or surge about 100-200 but never under 1100 rpm. So I remove my Iac and clean it out, put it back in and same..unplug it and idle settles down on the surging but still at about 1100 rpm...WTF!.sorry just some frustration, Then behold I find a broken plastic vac line off the tree marked AC so I figure tada i'm a brilliant mechanic so I plug the line cause it's for A/C and A/C is not here any more..and tada..no frigin change???????????? Someone help me out!!did I damage the IAC when spraying the TB cleaner while running the car?? or was it likely on its way out..or am I missing something all together different.??