When a semi truck overheats, it can bring a delivery schedule to a grinding halt and create costly downtime. Overheating is more than just an inconvenience—it can cause significant engine damage if not addressed quickly. Because semi trucks are designed to handle long hauls and heavy loads, their cooling systems must work properly under demanding conditions. At the first sign of overheating, it’s important to be proactive about addressing it. At Billy Bob’s Repair & Tire, we provide mobile semi truck cooling system repair in the greater San Antonio,TX area. Here’s a look at four common causes of semi truck overheating.

Low Coolant Levels

Coolant is critical for regulating engine temperature, and semi trucks require large amounts to handle the heat generated by long drives. If coolant levels drop due to leaks in hoses, the radiator, or the water pump, the system won’t have enough fluid to dissipate heat effectively. Even minor leaks can soon cause overheating in heavy-duty engines, making regular coolant checks essential.

Faulty Thermostat

If the thermostat gets stuck closed, coolant cannot circulate, and the engine will overheat rapidly. A faulty thermostat can also create inconsistent temperature regulation, which puts added stress on the cooling system. Replacing a malfunctioning thermostat promptly helps ensure reliable cooling on the road.

Radiator Problems

Semi truck radiators handle immense heat, and when they become clogged with debris, corroded, or damaged, their efficiency drops. Because radiators in semi trucks work under such heavy demands, keeping them clean and in good condition is critical for preventing breakdowns.

Water Pump Failure

The water pump is responsible for circulating coolant throughout the engine and radiator. If the pump fails, coolant flow slows or stops, leading to overheating. Warning signs include coolant leaks and unusual noises. Since water pump failure can quickly escalate into major engine damage, it’s important to address it ASAP.

24/7 Mobile Semi Truck Repair in San Antonio

For expert roadside mobile semi truck repair in San Antonio and the surrounding area, contact Billy Bob’s Repair & Tire at (210) 796-3891. Feel free to give us a call and we’ll arrive ASAP to get you back on the road!