I have a 2017 Hyundai Elantra with the 2.0L , and this engine has a ECT (Electronic Controlled Thermostat) and this is the first car I have owned with such a design coolant temp control system...
I have been pulling some live data off the car (obdii) and I have noticed the coolant temp fluctuates up and down a lot! like a toilet seat!.. I understand that the theory of a ECT is to maximize fuel burn by varying the coolant temp by opening the thermostat based on incoming data, but is this constant drop and rise is normal?
am planning to do a run on the high way with the cruse set and wanna see if I get the same up and down of the coolant temp as I am wondering if the ECU algorithm is will make the same changes to the coolant temp based on constant (flat) data coming into the ECU from its sensors..
My data is from a cold start, and the cars normal operating temp is 100 DegC based on the service manual.
Does anyone else have access to their cars live data for comparison? even if its not a 2017 Elantra 2.0l?.. but it would be ideal if its the same car as mine..