Whats up fellas, im having a weird idle problem with my b18a1 da9. When i turn the car on it will sit warming up at around 18-2000 rpms. Once its semi-warmed up it will begin to drop to if not under 6-700 rpms and shoot back up. Im going to clean the IACV or maybe even REPLACE it or i thought it could be the crankshaft position sensor... i havnt run a computer through it yet... any thoughts?!?!?

 

Try

 

How longs it had that issue? Was there anything done to the car prior to it starting?