Hi,
When you turn the OD on or off, it changes the load on the engine. The change in engine RPMs can be the cause for the change in how it runs and feels. By chance, is the check engine light staying on while the engine is running?
If it is, scan the computer to see if there are useful diagnostic trouble codes stored. If you don't have a scan tool, most parts stores will do it free of charge.
Here is a link that explains how the entire controller area network it scanned:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
Let me know.
Take care,
joe
SPONSORED LINKS
Monday, March 20th, 2023 AT 10:00 PM