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Why does the check engine light blink - flash in your Ford Windstar?

A blinking or flashing check engine light on a Ford Windstar (or any vehicle) indicates a serious problem that requires immediate attention. Unlike a steadily illuminated light which suggests a less urgent issue, a flashing light signifies a potentially damaging condition that could cause serious engine damage if ignored.

The most common reason for a flashing check engine light in a Windstar is a misfire. This means one or more cylinders aren't igniting properly, which can lead to:

* Damaged catalytic converter: Unburned fuel entering the catalytic converter can overheat and damage it.

* Engine damage: Continued misfires can cause significant internal engine damage, leading to costly repairs.

Other less common but still serious reasons for a flashing check engine light include:

* Ignition system problems: Issues with spark plugs, ignition coils, or the ignition control module.

* Fuel system problems: Problems with fuel injectors, fuel pump, or fuel pressure regulator.

* Severe exhaust leak: A large exhaust leak can affect the oxygen sensor readings and trigger the light.

Do not continue driving your Windstar with a flashing check engine light. Pull over safely as soon as possible and have it towed to a mechanic for diagnosis and repair. Ignoring the problem could result in significant and expensive damage to your engine. The sooner you address the issue, the better the chances of minimizing the repair costs.