What is the sound of one piston slapping?
What is the sound of one piston slapping?

Background: 2014 Mustang GT w/ 6MT

Just drove to the grocery store felt huge vibrations I think in the drive shaft above 20mph. Nothing below 20, then it increases intensity with increased speed. I thought wheels first because snow/ice could affect balance, but I cleaned them off and no change. There’s no grinding, chirping, smell, or otherwise. It’s just a cyclic vibration felt from the center of the car that is enough to measure on the Richter scale.


I thought the cold might be the issue, but wouldn’t that go away after driving a few minutes? I have to drive 40 minutes to the airport tomorrow, how screwed am I?

EDIT: The answer is not at all. It fixed itself on my drive to a shop. I am embarrassed lol THANK YOU very much for your responses!

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