DIY Ford F-150 10r80 Torque Converter Diagnosis and Replacement - Part 1

If your Ford F-150 with the 3.5L Ecoboost engine has started to experience a strange rumble or shudder while driving, you may have experienced a common issue with the 10R80 10-speed transmission. In this video, I walk through my full diagnostic approach to identify the root cause of this transmission vibration and explain the reasoning that led to a torque converter replacement. This is part one of a two-part series where I document the entire process of lowering the transmission and preparing for the repair to fix these known shifting and drivability issues. Diagnosing 10-speed transmission problems early can save you from a total failure, and having the right tools on hand is essential before you start pulling heavy components. I recommend sourcing your transmission filters, Mercon ULV fluid, and specialized tools online to save money compared to traditional auto parts stores. Check out my affiliate links below for the exact supplies I use for my F150 maintenance and repairs. If you are dealing with a similar shuddering sensation in your truck, watch along to see how I narrowed down the problem, and feel free to ask questions in the comments. Mercon ULV Pack of 10qt: https://amzn.to/4mBYz9S 10r80 Transmission Filter: https://amzn.to/4mCosX4 Transfer Case Fluid: https://amzn.to/3QjhWsk Hand Pump for Transferring Fluids: https://amzn.to/3Qhe1MI As with all of my videos, do your own homework to understand risks and codes applicable to your area. I am not a professional and these are just my experiences from my own projects.