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Temperature Sensing
David Holdeman edited this page Dec 17, 2025
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In order to configure a coolant temperature sensor or intake air sensor you will need to know its resistance at three temperatures - lowest, highest and somewhere in between. You will also need to know the value of the pull-up 'bias' resistor, which together with your sensor makes a voltage divider.
While troubleshooting CLT and IAT, the two most useful console commands are analoginfo and tempinfo. These show you the voltage registered by rusEFI alongside input pins and resistance processing values.
See also Measuring Temperature



1996 Dodge RAM 1500 V8 Temp spreadsheet from FSM - Forum

MLX90621
MLX90620 / MLX90621 - 16X4 pixel IR thermal array
Transition from MLX90620 to MLX90621

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