Piston Temperature Monitoring (PiTeM) enables temperature data to be taken and monitored directly from the engine connecting rod, piston pin bushing bearing, piston head and piston rings. In this way Continuous control and monitoring of piston cooling efficiency Condition of connecting rod upper bearing shell Piston pin bushing bearing condition Any jamming between the piston rings and the liner It provides early intervention in such situations. PiTeM with Energy Harvesting System is wireless and battery-free. It minimizes Connecting Rod Bearing and Piston Failures with a preventive, informative and protective early warning system by transmitting data via BLE and Wi-Fi.