Cooling systems keep engines from overheating, and if one part of the system breaks down you can wind up with a car that won't run.

The starter relay is one of the more critical parts of your ignition system, as a faulty one can mean a dead car.

As the summer continues to get hotter, air conditioning becomes one of the most important elements of a vehicle.

The fuel pump is the auto part that brings gasoline from the fuel tank to the engine so that it can be combusted and you can drive your car around.

Positive crankcase ventilation (PCV) valves help the crankshaft ventilation system remove gases from the engine, and they can wear out and should be cleaned or replaced every 20,000 to 50,000 miles.