hey guys.. i have a 96 LS teg (b18b1). it has about 140k miles on it.. runs great but idles kinda high after driving it for a long while..

it usually goes up to like 1500rpms then it drops down when i come to a complete stop.. i dont know whats going on. could it be a vacuum leak or something? someone help me out

 

check ur vacuum lines...if that isnt the case check ur iacv and last fitv...give those a shot