How to Troubleshoot the Cooling System in a Kia Spectra

Knowing how your cooling system operates helps pinpoint problems. Simply put, coolant collects heat when it goes through the engine and releases heat as it passes in the radiator. Cooling devices generally circulate antifreeze, contain it or control its temperature. Troubleshoot the cooling system in a Kia Spectra by inspecting cooling system devices. These steps apply to most model years.

Difficulty:

Moderate

Instructions

1. Check your water pump for leakage. The water pump keeps the coolant moving through the engine, radiator and heater core. A faint coolant smell or spots of antifreeze under your Spectra when parked briefly are signs of a faulty water pump.

2. Inspect hoses for cracks, collapses, leaks or dryness. This includes upper and lower radiator hoses, heater and bypass hoses and manifold coolant hoses. The upper hoses measure about 2 inches wide and carry coolant between the radiator and engine. A damaged hose causes cooling system problems.

3. Look at the coolant level. Low antifreeze results in overheating and other cooling problems. With low levels, add antifreeze to the coolant tank reservoir found on the passenger side of the vehicle. This applies to the 4-cylinder engine.

4. Drain your coolant and flush the system when pinpointing cooling problems. Disposing antifreeze properly is as important as draining it because its sweet smell attracts animals and small children. Ingesting the toxic liquid can be deadly.

5. Examine the radiator cap to see if it is faulty. A damaged cap could show signs of corrosion. Ask a mechanic to use a pressure tester or an adapter to examine the cap's pressure rating and functioning. Promptly replace a defective cap.

6. Clean up the front of your radiator. Dirt, rocks, leaves and other debris suck into the fins of your radiator when driving which causes overheating. Use a soft nylon brush, soapy water and a water hose to clean your radiator front.

7. Test the thermostat to see if it is sticking. One way to identify a stuck thermostat is constant low temperature readings or peaks between high and normal temperatures. Your thermostat, a spring-loaded valve that reacts to coolant temperatures, generally sits inside the housing on the engine side of the upper radiator hose.