I've been having a rough idle problem for a little while, and i've checked all the sensors on the Intake Manifold, and sprayed carb cleaner on all my vacuum lines to check for leaks, still no luck.. Well, I remember a while back I had a 95 turbo eclipse, and I had the same rough idle problem and it was my O2 Sensor, any chance that this is my problem? Thanks...

 

Any check engine lights?

How many miles on the car?

 

no CEL, and i got the motor about 2 months ago with approx 30-50k miles.. JDM D15B.. but i used the o2 sensor off my d15b7 before the swap cuz my jdm motor had all sensors cut... and old motor had 90k...