So about that screeching noise from the front end when it's raining. After a LOT of research I found out that the sound does not come from the grill nor the wheels nor the windows. What is happening is the v-10 engine is inhaling water thru the air cleaner scoop. The filter gets wet, allowing air (in tiny spots ) to bypass the filter causing a horrible screeching noise when wet. The fix is simple. Go to home depot ,purchase a 3" ductwork elbow and duct tape it to the air cleaner scoop, so that the engine is drawing air from a higher point in the engine compartment. ford had a service note concerning this a few years ago. Hope this helps.
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