Why is the coolant temperature warning light on in the Verna?
1 Answers
There are five main reasons for the coolant temperature warning light to illuminate in the Verna. Below are the detailed explanations: 1. Insufficient or inappropriate coolant: Fails to effectively dissipate heat generated by engine components, leading to overheating. 2. Inadequate cooling surface area: Diesel engines are designed with cooling surface areas matched to power and load. Since most coolant in water-cooled diesel engines consists of water mixed with ethylene glycol, substandard coolant quality can cause significant scale buildup in cooling pipes, blocking them and reducing cooling efficiency. 3. Thermostat failure: The thermostat automatically adjusts the flow of coolant to the radiator based on temperature, altering the circulation range to regulate cooling system capacity and maintain optimal engine operating temperatures. A faulty thermostat may prevent the cooling system from entering full circulation mode, causing temperature rise. 4. Cooling fan malfunction: During high-speed operation, heat cannot be efficiently transferred to the coolant, impairing heat dissipation and leading to increased coolant temperature, potentially resulting in boiling over. 5. Delayed fuel injection timing: Unburned diesel can cause excessive diesel engine temperatures, and increased cylinder head temperatures may also lead to engine coolant overheating.
