Del_Slo_b16

hey guys i have a 97 civic dx with a b16 swap, i just cleaner the iacv valve and replaced the missing intake air temperature sensor that goes in the intake. For some reason now every so often the idle will fluctuate and ive searched everywhere but cant find anything similar to my situation. Usually it fluctuates after i hit a higher rpm then 3-4 and then it will go away but sometimes it wont until i drive a few miles. Also i am finding oil in my air intake. I believe its being caused by blow-by but i dont think its supposed to be that bad. If anybody has any suggestions on what to do I would appreciate the help. Thanks a lot in advance

Del_Slo_b16

any help??