Pajero IO High acceleration issue

[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. 

Edited October 28, 2020 by Nikini16

[iRage]

What is the ECU it is running ? Assuming that all the sensors are in working order and fitted correctly; did you put the ECU out of the new engine ? Did you reprogram the existing ECU ?

In some cars the ECU for a manual and auto are different so you have to swap the ECU as well. In some cars the ECU needs to be re-programmed. 

[Gummybr]

I had a similar issue in my old Baleno, a throttle body clean up did the job.

As iRage said the ECU could be faulty as the programming would be different from Auto to Manual.