Quote Originally Posted by oj88 View Post
The idle-learn procedure needs to be performed when any of the following is done to the car:

1. The ECM was replaced, reset or updated
2. The car battery was disconnected for a length of time causing the ECM to reset
3. Throttle body was serviced (cleaned or replaced)

Any of these conditions could erase the stored idle parameters from memory.
then yun nga nangyare.. when the battery was taken out to change the headlights, that must have triggered the reset. kaso wala pa namang mga 15mins cia disconnected e.