One problem related to gasoline engine has been reported for the 2003 Ford Windstar. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Windstar based on all problems reported for the 2003 Windstar.
Was driving down street, steady speed approx 40 mph, not using cruise control. Attempted to brake for intersection, vehicle would not slow down. Visually looked to confirm foot was on brake and not on accelerator, it was on the brake and was not on the accelerator. Shifted into neutral to avoid a crash, the engine revved way up then slowed down. This was a one-time incident so far, but it only happened yesterday and I haven't driven it much since then.