Practice question

An engine is overheating, but the lower radiator hose remains cold to the touch. What is the most likely cause?

  1. The water pump impeller is slipping on its shaft
  2. The radiator cap is leaking pressure
  3. The thermostat is stuck in the closed position
  4. The cooling fan is rotating in the wrong direction

Answer: C — The thermostat is stuck in the closed position

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