Friends car. When driving, 50-60mph and accelerating, it vibrates strongly. Tires are good. Wheels are all balanced. Only does it when accelerating in that speed range. There was a cylinder 3 misfire code which went away when I swapped out the plug. The plugs had been changed a few years ago.
Also I checked the transmission fluid and it is perfectly red and full, no clutch material at the bottom
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Tuesday, March 15th, 2022 AT 12:13 PM