Radiator Problems

Coolant disappearing without a puddle means the leak may only happen under pressure, may evaporate on hot parts, may leak inside the cabin through the heater core, or may be entering the engine. This needs diagnosis because low coolant can quickly lead to overheating.

A coolant leak means the cooling system is losing the fluid that carries heat away from the engine. Small leaks can become major leaks fast. Low coolant can cause overheating, no cabin heat, head gasket damage, or engine failure.

Cooling Fan Not Working needs a focused diagnosis because the same symptom can come from several different parts. Start with the checks that match when it happens, then verify the likely cause before replacing parts.

A hub for thermostat behavior, housing leaks, stuck-open running cold, and stuck-closed overheating.

If the temperature gauge stays in the low or cold range after the engine has been running for several minutes, or if the heater never gets warm, the cooling system is likely releasing heat too early or too much. A stuck-open thermostat is the single most common cause. Other causes include a cooling fan that runs too soon, certain coolant flow restrictions, or a failed coolant temperature sensor that gives a false reading.