A semi truck’s engine works hard every day, often running for long hours under heavy loads. With so much demand placed on it, it’s no surprise that overheating can become a serious problem if something goes wrong. An overheated engine isn’t just an inconvenience—it can lead to costly repairs, unexpected downtime, and potential safety risks on the road. When a semi truck engine overheats, it’s important to address the underlying issue ASAP. At Blue Gray Towing, we provide expert semi truck cooling system repair in the greater Hagerstown area. Here’s a look at four common causes of semi truck overheating. 

Cooling System Leaks

The cooling system plays a critical role in regulating engine temperature. If coolant leaks from locations such as hoses, the radiator, or the water pump, the system can’t circulate enough fluid to keep the engine at a safe operating level. Low coolant quickly leads to overheating, and ignoring leaks can cause significant engine damage. Regular inspections are key to catching leaks early and keeping the system properly filled.

Faulty Thermostat

The thermostat controls the flow of coolant through the engine and radiator. When it’s working correctly, it opens and closes to maintain a consistent temperature. But if the thermostat fails, it can stay stuck closed, preventing coolant from circulating as it should. This quickly causes the engine to overheat. Replacing a faulty thermostat is a relatively simple repair that can prevent major damage.

Clogged Radiator

The radiator is responsible for dissipating heat from the coolant. If it becomes clogged with debris, it won’t be able to cool the fluid effectively. When the radiator isn’t performing properly, heat builds up in the engine and leads to overheating, especially during long hauls or steep climbs.

Water Pump Failure

The water pump keeps coolant moving through the engine, hoses, and radiator. If the pump wears out, coolant flow slows or stops entirely. Without proper circulation, the cooling system can’t function, Unusual noises or coolant leaks near the pump should be addressed quickly.

Semi Truck Repair in Hagerstown, MD

For expert semi truck repair in Hagerstown, MD and the surrounding area, contact Blue Gray Towing at (301) 241-7461. We also offer 24/7 heavy duty towing in the greater Hagerstown, MD area!