Tim D Posted June 7, 2020 Report Share Posted June 7, 2020 I've lived with a weird idle control situation for some time and decided to capture a log to see what's happening. When driving 'normally' and coming to a standstill, occasionally the engine speed will suddenly jump up a little. It's no big deal, I'd just like to resolve it. It appears that despite AP being at zero, the TP jumps up for some reason. See screenshot, tune and datalog below: Screenshot: https://drive.google.com/file/d/1AXVKoc_vjqeM8Qq-3aWgT_zJsY37zymf/view?usp=sharing Tune: https://drive.google.com/file/d/14fVHTdeCB9rt0rWP9-6zm887joFViK-H/view?usp=sharing Log: https://drive.google.com/file/d/19VgWmXtzkCxHAdn5JETEF13VTIuqy5xd/view?usp=sharing Any help would be appreciated? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted June 7, 2020 Report Share Posted June 7, 2020 had a quick look and it happened when you moved from the idle control being locked out by your vehicle speed to being in closed loop idle control, the blip is the 2% idle base position being applied then after 2 seconds the closed loop idle kicks in and pulls the idle speed down. To fix it consider reducing your ISC Base Position values in the 80-100deg c range Tim D 1 Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 7, 2020 Report Share Posted June 7, 2020 With E-throttle idle control the base position table should be near zero at normal operating temp, the main idle throttle opening required should come from the main E-throttle target table. So you need to subtract about 1.5-2.0 from all the numbers in your base position table and add 1.5-2.0 to the top row of your E-throttle target table. Tim D 1 Quote Link to comment Share on other sites More sharing options...
Tim D Posted June 8, 2020 Author Report Share Posted June 8, 2020 Thank you for the suggestions, much appreciated. Quote Link to comment Share on other sites More sharing options...
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