Cummins 4BT – Coolant System Malfunctions – Gauges, Overfueling and Loading

Gauges and sensors are used in the system to measure the coolant temperature. These can malfunction and proยญvide an incorrect temperature indication.

Caution: Overfueling can cause the engine to overheat.
Make sure that the fuel pump is calibrated correctly.

Caution: Constant overloading (lugging) can cause the engine to run hot.