Decoding Fuel Trims: Your Scan Tool's Best Friend for Engine Diagnostics скачать в хорошем качестве

Decoding Fuel Trims: Your Scan Tool's Best Friend for Engine Diagnostics

Fuel trims are one of the most powerful diagnostic tools in a technician's arsenal, yet often misunderstood. In this video, we break down "Understanding Engine Management Fuel Trims" to help you master their interpretation and improve your diagnostic accuracy. Learn how modern ECUs use MAF and O2 sensor data to continuously adjust fuel delivery, what positive and negative fuel trim values really mean, and the crucial difference between rich and lean conditions. We'll cover the implications of short-term vs. long-term trims, why accurate O2 sensor feedback is non-negotiable, and what happens when you clear those values by disconnecting the battery. Understand the various ways fuel trims are expressed (percentages vs. scaled values like 128) and the critical ±10% threshold that often triggers diagnostic codes. Elevate your diagnostic skills and pinpoint engine issues faster with a solid grasp of fuel trim analysis. This video presented by Duralast.