Nikini16

Hi guys, I have a Pajero io Gdi Auto. I had some issues in engine and i replaced the engine and wire harness with an engine and wire harness used in a manual one. After that I'm experiencing a auto high acceleration and increase of RMP when start the engine. With the time also this isn't getting reduced. So anyone have any idea where the issue is or any recommend place where I could fix this. Thanks in advance.