Adjust Fuel Trim
3:49
11:41
51.2K views
At 3:49 in
"Breaking In" LSXcalade's New Engine and Ironing Out Some Issues (Twin Turbo Escalade ESV)
What happens here
After replacing the IAC valve, the vehicle still exhibits issues, including stalling. The owner analyzes the tuning software on his laptop and realizes that the fuel settings for idle are too low (single-digit percentages) compared to the ideal range of 15-25% from prior adjustments. This lean condition at idle, along with incorrect vehicle speed readings (showing 3 mph when stationary), affects the trans brake functionality. These settings need to be adjusted to provide sufficient fuel at idle.
Goal: Correct the lean idle condition in the tuning software
Tools and materials
- Laptop Lenovo — Running the tuning software
- Tuning Software — Adjusting engine parameters, specifically fuel trims
What they say
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What they say
(1,167 characters)Auto-generated from the video audio.