[tomj76]

I didn't see a common Windstar repair mentioned that some repair technicians have missed. This is the need to clean EGR ports (the points where the exhaust gas actually combines with fresh air) located in the intake manifold. If these have never been clean on your vehicle, it may be the cause of your problems.

My '96 Windstar rarely gives an EGR code even when thise are the root cause of misfire problems (which are reported). The repair requires almost no parts, only some time to access the ports under the upper intake manifold.