Good morning, DSHORT,
It's possible it might be your clutch slipping. This could be caused by a leak from the hydraulic system that controls the clutch.
I am adding a few diagnostic procedures for you. I would take a look at them and perform the test in order.
One thing I would check is the fluid level of the clutch master cylinder fluid as well as the condition of the fluid.
If it is low, it could signal there is a leak in the system. This would contaminate the clutch material and cause slippage in the clutch which could cause a vibration when accelerating.
After checking the fluid and for any signs of a leak go to the "Symptom Chart" I have included and perform the "Pinpoint Tests" that pertain to your symptoms.
Since this issue is only happening during acceleration my thought is it might be drivetrain related.
Let me know what you find, and we can go from there.
Thank you,
Brendon
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Sunday, April 23rd, 2023 AT 5:35 AM