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meelis11 · 09-15-2010, 03:21 AM

Hi,
I would like to see coolant temperature on MPGuino but I dont know how to connect it to MPGuino.
Has anybody done it? Schematic/sketch would be nice

I know that coolant temperature sensor varies resistance and ecu sends 5V into it.

I measured it some time ago, some example measures:
* outside temp 18C, engine not started = 2960 ohms.
* warm engine (ca. 90C) = 170 ohms
* 4 hours later 1325 ohms

09-15-2010, 03:21 AM	#1 (permalink)
meelis11 EcoModding Apprentice Join Date: Feb 2009 Location: Estonia Posts: 199 Green frog - '97 Audi A4 Avant 1.9TDI 81kW Diesel 90 day: 43.1 mpg (US) Thanks: 19 Thanked 40 Times in 28 Posts	MPGuino and Coolant temp sensor signal Hi, I would like to see coolant temperature on MPGuino but I dont know how to connect it to MPGuino. Has anybody done it? Schematic/sketch would be nice I know that coolant temperature sensor varies resistance and ecu sends 5V into it. I measured it some time ago, some example measures: * outside temp 18C, engine not started = 2960 ohms. * warm engine (ca. 90C) = 170 ohms * 4 hours later 1325 ohms