Hi,
First, is the transmission fluid clean and full? Also, is the check engine light staying on when the engine is running?
If that is the case, have the computer scanned to see if there are diagnostic trouble codes that could be related. Here is a link that explains how to scan the can-bus. This type of scan will retrieve codes regardless of the module storing them.
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
If that is something you can't do, most parts stores will provide a general scan at no charge. I would at least try that.
Also, how did it reach 8K RPMs with the throttle cable disconnected? Could it have been something different that you disconnected?
Let me know.
Joe
May 14, 2023 at 8:13 PM
