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An engine is easiest to judge when it is doing the least amount of work. At idle, it must keep […]

A car battery does not have to be completely dead before it becomes unreliable. It may still start the engine

A weak battery usually causes trouble before the engine starts. Alternator trouble becomes more revealing after the engine is already

You press the start button or turn the key. The dashboard lights come on, the radio works, and the battery

A warning symbol suddenly appears while you are driving. The car may still feel normal, but you now have only

Your engine may idle roughly, hesitate during acceleration, or suddenly lose fuel economy. These problems can feel unrelated, but they

An overheating engine rarely begins with dramatic steam pouring from under the hood. It often starts quietly: the temperature gauge

A weak battery often gets blamed when an engine struggles to start. A fuel-system problem may be suspected when acceleration

The check engine light can appear even when your car seems to be driving normally. Sometimes the cause is as