General Motors 8L90 torque converter theory and operation

This video is part five of a seven part series on the GM 8L90 transmission. In this video, I cover the operation of 8L90 torque converter. I describe the torque converter construction, electronic and hydraulic controls, and issues/concerns regarding this converter.

Here are the other videos in this series:

8L90 Overhaul - part one covers disassembly:    • General Motors 8l90 Overhaul Part One...  
8L90 Overhaul - part two covers assembly, including clutch and gearset assembly and measurements:    • General Motors 8l90 Overhaul Part Two...  
8L90 Overhaul - part three covers valve body:    • General Motors 8L90 mechanical operat...  

8L90 Mechanical and powerflow:    • General Motors 8L90 mechanical operat...  
8L90 Hydraulics:
8L90 Electrical theory and operation:    • General Motors 8L90 electrical theory...  
8L90 Rebuilding Particulars:
8L90 Modifications and Tuning:

Special thanks to Precision International, TransGo, and Sonnax for providing me with product to use in these videos. Also thanks to KB Cores and AA Midwest for providing me with a few 8L90 cores at a good price!