Vibrates with acceleration

Hi Erica and thanks for using 2CarPros.com.

If it is shaking when you accelerate, it sounds like a possible misfire. Is the check engine light on? If it is, you need to have the computer scanned to determine if it is a misfire or something different. Here is a link that discusses vibrations on acceleration. See if it provides any insight for you.

https://www.2carpros.com/articles/vibration-noise

Here is a link that discusses misfires:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Let me know if the check engine light is on.

Take care,
Joe

Okay, since it only happens when you accelerate, I wonder if it has something to do with a universal joint (u-joint). Have you checked them? Here is a link that shows how it's done.
I don't know if you need it, but here is a link that shows how to check one. Check this and let me know what you find.

https://www.2carpros.com/articles/how-u-joints-work

Since the check engine light isn't coming on, Erica, then it most likely isn't a misfire either. I think we need to focus on the drive line. One other thought, make sure there isn't a worn motor or transmission mount.

Here is a general link that looks at many different reasons for vibrations. Page down until you reach the section on belt tensioners. You know, if the tensioner is bad, you may be feeling it only at high RPM's. SInce it stopped for a couple days after you did the work, I'm starting to question the tensioner, a belt driven accessory...

https://www.2carpros.com/articles/vibration-noise

Let me know what you find. I'm interested in knowing.

Take care,
Joe