Just to jump in, do you have a check engine light or any warning lights?
It is probably a good idea to check for codes just to be sure we don't have any.
However, it sounds like you are having an issue with the fuel adaptives.
This is most likely caused by o2 sensor issues because what happens when you clear the battery is you are wiping the memory of the PCM.
Then it takes about 100 miles to run through all the required monitors and then it starts using all these systems to optimize the fuel consumption.
The best way to try and figure this out is to monitor the o2 sensor data with a scan tool but I know you don't have one. Does anyone you know have one that can monitor o2 sensor data?
Basically, I think we are going to be at a stale mate if we can't start monitoring these systems to find out where the issue is.
Thursday, November 25th, 2021 AT 6:58 PM