Welcome to 2CarPros.
It can be the result of several things. Has the check engine light come back on?
You have quite a few miles on the vehicle. When was the last tune up done? What the vehicle timing belt ever replaced? Was engine compression checked? If there is a loss of power, has the catalytic converter ever tested to check for blockage?
I realize I have many questions, but there are several thing that can cause the engine to run rough. Also, you indicated you replaced the knock sensor. Is it the sensor under the intake you replaced? I attached a picture to help confirm.
Also, did this start all at once? Is there anything you can think of that makes it worse?
Let me know,
Joe
Image (Click to make bigger)
SPONSORED LINKS
Thursday, May 23rd, 2019 AT 8:12 PM