Hello,
It sounds like your vehicle might be in 'limp mode' or low power mode.
Limp mode is designed to get the vehicle to its destination under low power in order to protect the engine or transmission.
When a malfunction is detected of the engine management system or transmission system, the limp mode can be triggered by the computer.
Depending on the reason for the limp more sometimes it can be reset by disconnecting the battery.
However it is important to find out why the limp mode got triggered in the first place and take appropriate actions.
One of the primary reason the limp mode gets triggered is due to having dirty throttle actuator. Over time the actuator will have dirt buildup and can cause sluggish acceleration and low power.
Here is couple of helpful article:
https://www.2carpros.com/articles/reduced-power-limp-mode
https://www.2carpros.com/articles/engine-has-low-power-output
Many times with engine in limp mode the check engine light gets illuminated. If the light is on then scan the vehicle for fault codes. This can help identifying the issue.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
Please let me know of any questions.
Thank you.
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Monday, September 13th, 2021 AT 7:55 AM