Any mechanics know what this might be?
My 2011 Prius is starting to vibrate at freeway speeds between 55 and 80 while the accelerator is pressed. Let off the gas and it smooths out. Press the gas even slightly and it starts again.
It’s more noticeable after driving for at least 10 miles, and less so when cold. It also seems to be coming mostly from the right front side.
Also, at freeway speeds when I press the gas there’s a “thunk” feeling like a small amount of slack is being taken up, and a similar feeling when I take my foot off the gas. There’s no actual noise accompanying the feeling though.
At low speeds there’s no noticeable issues in either drive or reverse. There’s no noticeable leakage anywhere that I can see, and when I lifted the car and shook the tires at the 9/3 positions and again at 12/6 they felt solid. The CVs also look clean and the boots are fine.
My feeling is it’s either the motor mount(s) as I just had the engine replaced, or that the CV on the right side is going.
Thoughts?
It’s more noticeable after driving for at least 10 miles, and less so when cold. It also seems to be coming mostly from the right front side.
Also, at freeway speeds when I press the gas there’s a “thunk” feeling like a small amount of slack is being taken up, and a similar feeling when I take my foot off the gas. There’s no actual noise accompanying the feeling though.
At low speeds there’s no noticeable issues in either drive or reverse. There’s no noticeable leakage anywhere that I can see, and when I lifted the car and shook the tires at the 9/3 positions and again at 12/6 they felt solid. The CVs also look clean and the boots are fine.
My feeling is it’s either the motor mount(s) as I just had the engine replaced, or that the CV on the right side is going.
Thoughts?
51-55, M
