What Causes A Car To Overheat?


Car Overheating | Lou's Car Care Center, Inc.


A common problem many drivers face is overheating. Serious engine and transmission damage can occur when a vehicle over heats. Learn more about what causes a car to overheat and how to avoid it.


  • Low Coolant Level:

Coolant or antifreeze helps keep the engine cool by circulating throughout the engine block and radiator. If there is not enough coolant, the system cannot dissipate heat. This causes the engine to overheat. Check the coolant level often and add more if necessary.

Vehicle Coolant | Lou's Car Care Center, Inc.

  • Broken Thermostat:

The thermostat controls the temperature of the engine. It can cause the engine to overheat or run too cold if it fails. A thermostat can break for reasons, such as corrosion, wear, or a mechanical failure. Have a mechanic replace your thermostat if you think it may be broken.

Thermostat Housing | Lou's Car Care Center, Inc.

  • Radiator Problems:

The radiator dissipates heat from the engine that the coolant has absorbed. If the radiator is clogged or damaged, it cannot perform effectively. This can result in overheating. Have the radiator serviced, cleaned, or replaced.

Radiator Fan | Lou's Car Care Center, Inc.

  • Failing Water Pump:

The water pump circulates the coolant throughout the engine. The coolant cant circulate if it fails, and the engine will overheat. Water pumps can fail due to worn bearings, cracked impellers, or leaks. It is important to have your water pump checked often and replaced if it is failing.

Water Pump Housing | Lou's Car Care Center, Inc.

  • Electrical Problems:

Problems with the electrical system can also cause a car to overheat. If the fan switch or relay fails, the fan won't turn on. And can cause the engine to overheat. Overheating can also be caused by a faulty temperature sensor or gauge or a blown fuse. If you suspect an electrical issue, have it diagnosed and repaired by a trained auto mechanic.

Vehicle Fuses | Lou's Car Care Center, Inc.


Regular vehicle maintenance can prevent overheating. If you notice any steam coming from under the hood, a high temperature gauge, or an engine warning light- stop driving immediately! Schedule an appointment with an auto repair shop to look into your problem. This will help you can serious damage to the engine and transmission. And keep your car running smoothly.


Is your car overheating? We can help! Lou's Car Care & Fleet Services is the top choice for all your engine and transmission needs. Proudly serving Baldwinsville, NY, and surrounding communities since 1976. Call us or schedule your next appointment online today!



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