The cooling system also incorporates elements of the cabin’s ventilation system, because engine heat is used to warm the car’s interior.

Symptom: An engine’s cooling system is overheating ... which cost from $40 to $200. A simple test for a faulty radiator cap is to simply replace the cap and see if that solves the problem.

Our water pump gave up the ghost a few days ago, and a quick peek under the car revealed ... water in the cooling system, so we made a point to thoroughly flush the radiator and engine block ...