Understanding+Diagnosis: Adaptive Fuel Learn Strategy

For Expert DIY's only!! High level material on exactly how the PCM uses the "learned" Long Term Fuel Trim to adapt to variable conditions. This material is helpful in knowing how to properly use and analyze fuel trim data from your scantool, understand why you sometimes seem to get unexplained variability in fuel trim analysis, and quite honestly: it just makes you a true car geek. Disclaimer: This level of material is honestly as far as I really go for my "hobby" so it somewhat stretches my limits. The material is not intended to be 100% accurate but more to give the necessary understanding of the concepts enough to help you make good diagnostic decisions in your data collection and analysis. It is essential to understand Fuel Trims very thoroughly to comprehend this video. My Fuel Trims primer is here:    • Secret of Engine Problem Diagnosis- Fuel T...   The Jeep lean condition video referred to in this video is here:    • P0171, P0174, Misfire Diagnosis 2004 Jeep ...   I hope you enjoy it!