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In 2007, the Ford Focus check engine light can be triggered by issues like overheating and stalling, signaling potential engine problems. Loose gaskets should be promptly tightened, and oil leaks repaired without delay. A displaced spark plug could also disrupt engine function. One critical concern is engine overheating, which may lead to severe consequences such as vehicle fires or explosions. Additionally, excessive oil usage may necessitate immediate oil changes. The air filter should be replaced every 15,000 to 30,000 miles, while the coolant should be changed every 60,000 miles. Spark plugs generally need replacement every 100,000 miles, except for copper ones which should be changed every 30,000 miles.
A blinking check engine light means there's an engine misfire, whereas a steady check engine light indicates that the computer detected a different problem, requiring an obd scanner to identify the fault.