Can the truck still run with the water temperature in the 90s?
1 Answers
No. The normal working temperature of a truck's water temperature should be above 70 and below 85. Exceeding 90 means it is in a dangerous state and should not be driven. Otherwise, if the temperature is too high and boils over, the engine cylinder gasket may burst, and in severe cases, the cylinder head and block may deform. The reasons for high water temperature in a truck include the following: 1. Insufficient or improper coolant: Diesel engines operate at extremely high internal temperatures, so the coolant used must meet strict requirements. If the coolant is severely lacking, it cannot effectively dissipate the heat generated by the engine components, leading to overheating. 2. Insufficient cooling area: Diesel engines are designed with cooling water areas matched to their power and load. However, since most cooling fluids in water-cooled diesel engines consist of water mixed with ethylene glycol, some may even add tap water in summer. Over long-term use, if the coolant quality is poor, it can lead to scale buildup in the cooling tubes, blocking them and reducing cooling efficiency. 3. Thermostat failure: The thermostat automatically adjusts the amount of water entering the radiator based on the coolant temperature, changing the water circulation range to regulate the cooling system's efficiency and ensure the engine operates within the proper temperature range. If the thermostat fails, the vehicle's cooling system may not engage in a full circulation, causing the water temperature to rise. 4. Cooling fan malfunction: When the vehicle runs at high speeds, the heat generated cannot be transferred to the coolant in time, affecting cooling and leading to increased coolant temperature, which may cause boiling. 5. Water pump failure: Pump failures include seized bearings and damaged impellers. Seized bearings are rare, but impeller damage, such as cracking or detachment from the pump shaft, can slow down coolant circulation, leading to engine overheating. 6. Delayed engine fuel injection: Unburned diesel can cause the diesel engine to overheat, and increased cylinder head temperature can also lead to engine coolant overheating.
