What Causes the Car Radiator Temperature to Not Rise?
2 Answers
Low engine coolant temperature may be caused by insufficient coolant, a malfunctioning radiator fan, or a faulty water circulation pump. The specific reasons are analyzed as follows: Insufficient Coolant: Check the coolant level and look for any signs of leakage. If there is no leakage, simply add more coolant. Radiator Fan Malfunction: A faulty radiator fan can lead to cooling system failure, and in severe cases, may even cause the engine to overheat. It is advisable to stop and inspect the vehicle promptly while driving. Water Circulation Pump Failure: A malfunctioning water pump can disrupt the engine's water circulation, directly causing the liquid cooling system to fail.
I've been driving for almost twenty years, and the most common reason for the radiator temperature not rising is the thermostat being stuck in the open position, causing the coolant to continuously circulate and dissipate heat, preventing the engine from warming up. This is especially noticeable during winter short trips, where the car doesn't warm up before reaching the destination. Another reason could be a faulty coolant temperature sensor sending false signals to the computer, making it think the engine is overheating. It's also possible that air has entered the cooling system, or the fan is running too aggressively. If the water temperature doesn't rise, the engine can't work efficiently, leading to a surge in fuel consumption and easy buildup of sludge. During maintenance, remember to ask the technician to check the thermostat's opening and closing. Spending a few dozen dollars to replace it will solve the problem—don't delay, as it affects the engine's lifespan.
