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When you have a power loss like this, the most common cause is a plugged catalytic converter. If the engine can not properly exhaust, it builds back pressure and you have a big power loss. Interestingly, you described it as feeling like it is plugged.
Here are a few links I want you to look through. The first describes symptoms associated with a plugged converter. The second and third describe hot to test a converter and replace one. Check that first and let me know what you find.
https://www.2carpros.com/articles/bad-catalytic-converter-symptoms
https://www.2carpros.com/articles/how-to-test-a-catalytic-converter
https://www.2carpros.com/articles/catalytic-converter-replacement
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If you are able to, remove the pre catalytic converter sensor and see if it makes a difference. Because of the size of the sensor, it won't feel perfect, but you should notice a difference.
Let me know what you find or if you have other questions.
Take care,
Joe
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Friday, July 26th, 2019 AT 8:21 PM