atvdude

just got done putting a new low mileage motor in my 96 civic sedan. installed new time belt, water pump, seals etc, and new radiator, new distibutor ,Clutch, alternator,drive shafts , brakes, fuel filter, fule lines ,brake lines, and much more. so i am anxious to get this thing on the road and driving it. I Am now having an irractic idle but runs fine driving it until pullin in clutch or stopping. I had a iac valve check engine code. i then found that the plug to the iac was not all the way snapped on. thought this was the problem. reset the code and engine is still idleing irratic again???? any ideas. The motor has 60k on it think i need to clean the iac? my guess is that it sat on a shelf at a salvage yard for awhile. luckily they had all the openings plugged off but there may be some dried up stuff in there i cannot see??? I also made sure the coolant was top off good and sprayed starting fluid on vac lines with no change so i know they are good. One more thing? There may be a possablity the thermostat is stuck open because i have never heard my fan come on and the temp always stays low. could a bad thermostat have anything to do with a rough ide also?? thanks for any help i would appreciate it.