Hey guys, I have built a device that monitors engine temperature actively and it can notify you before something abnormal happens during the operation. i.e: Overheating due to Coolant loss, Stuck Thermostat Valve, Radiator malfunction or Fan motor malfunction etc.
I own a 5+ year old Suzuki Cultus but it can be used on any car since the sensor is directly bolted near piston and head.
Normal operating temperature is 92C where the fan kicks in at 94C and engine is supposed to maintain that temperature.
Some of the modern cars come with a Coolant Level Sensor, please note it is NOT the same thing as it doesn’t monitor the temperature, Your car can still overheat in case of T-stat or Fan/motor malfunction. This device will trigger if the temperature rises 2-3C above the peak operating temperature and a high-pitched buzzer sound can alert you well before the engine starts to overheat, so you never run the risk of a head-gasket failure..
As engine already runs on high temperature it is very hard to differentiate minor changes, this sensor will actively monitor temperature changes in 0.1C increments and trigger an alarm if operating temperature ever exceeds the threshold.
I have set the following parameters:
Sensor bolted to Head/Piston area of the engine
Ambient Temperature: 36C
Engine Temperature at Startup: 38C
Engine reaches peak operating temperature in 3-5minutes: 90.1C
Engine Temperature with A/C: 92.2C
Engine Temperature with A/C in Stop and Go traffic: 94.5C
Engine Temperature Peak: 95.2C (June 5th, 2018 12:45pm)
Buzzer Trigger Set at 98C
Cost: Sensor $4.70
Buzzer: Rs.15
Wiring: 12VDC Cigarette lighter box.
I am still testing this device and so far this device has been giving me fantastic and professional results.
This idea was taken from Engine WatchDog Australia they sell a similar device for $99.00
I will post some updated pictures after the assembly.
