Why does it not go past 2,000 RPMs?

Hi,

Oftentimes, if there is a variation between the crankshaft timing and camshaft timing, the engine is limited. The computer will prevent it from revving beyond a specific point.

By chance, is the check engine light staying on when the engine is running? If it is, have you scanned the computer to see if there are any diagnostic trouble codes stored? If you haven't, I would do that first to see if there are codes that can point us in the right direction.

Here is a link that explains how to scan the CAN (controller area network). If you can have this done, it will retrieve codes regardless of the module storing them.

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Let me know.

Take care,

Joe