11screw50

Water does not build up on a vertical surface and sure as hell does not 'build up in the grille' unless it is frozen water. The grille shutter is behind the grille, there is no way water is coming back out the grille then, defying gravity, up onto the hood.

The last part of your statement is correct but your source for the water is not. The water pools in the crease in the hood and when you slow down it runs down the hood, when it gets to the edge of the hood the air coming up the edge of the hood blasts it back, onto the windshield.

ns_redneck

yeah the shutters are about 3 inches back from the grill. any water that makes it that far is just going to fall to the ground.

robbieg

As I stated earlier, not possible.

old_programmer

I didn't say I agreed with it. Just what seems to be the reasoning of why the shutters are involved. Personally the water doesn't bother me. This truck isn't the first one to flood my windshield from a water buildup nor do I expect it to be the last.

stormsearch

Grill shutters may only play a role in blocking the air, forcing air upwards over the hood. I have only experienced this during the fall, cooler am mornings and very likely my AGC's are closed. How much it really affects, don't know and really is no big deal overall.

But very first time it happened, dark, wet roads, NOT raining, no wipers, hitting brakes for a change in stop light and being able to not see for a couple seconds does give you pause. I'm no longer worried about it, but for the sake of my wife/kids who may drive it 1/year will not ever see the issue or will not remember.

It is solved with a Stampede but now have droplets coming off it creating a little annoyance. This never happened on my previous two vehicles and I'm banking it is the airflow coming over the hood, not entering the engine area since my AGS are closed.

UNBROKEN

iTrader: (1)

Has nothing to do with the shutters being open or closed. Every Super Duty since 2011 does the exact same thing. I've owned a few of them....same thing the 150's do.

Nickel AP

EXACTLY!!! the "its just water stop complaining" deal is semi annoying. I know its just water, and yes the wiper blades fix it, BUT if some one unfamiliar with the car is behind the wheel (my fiance) and it happens. It could be worse than if the water never blew back. Also a minor thing about it is, you just spent hours detailing your truck now everything is covered with water. WHY? because the water blow back issue. I understand its not a big deal but why not solve the issue, no matter how small it is.

As far as the light goes, like i said before, base model (XL) have 2 lights in the truck. one center front, one center rear.

To be honest i'm a little surprised with all of the smart *** remarks on here. I figured people would be excited about helping new f-150 owners do stuff to their truck, not complain about them trying to find fixes. It's kind of like some one saying, "hey i have a small hole in my side wall and i lose air every so often, anyone have good tires they recommend?" and the response being, "well its only a small hole stop complaining." If its not a big deal to you, then sail on sailor.

Thanks to everyone with the awesome ideas. Ill be checking out the stampede.

Great white

iTrader: (1)

It's not the grill shutters. Mine will do it with them open or almost closed. I have the PID loaded up and I monitor them. Mostly just for curiosities sake.

firecadet613

It is the shutters. Think about it. When they are open, air is flowing into your grill, past them. When they are closed or almost closed, they are diverting more air up and over your hood.

As your coming to a stop, the water runs down your hood, meets the increased airflow over the hood, and gets blown onto your windshield.

Great white

iTrader: (1)

Nope, I have to disagree. I don't have to think about it, I've seen it first hand.

Like I said, I monitor them:



It's "Grill A CMD"

Lowest I've seen is 20% and that was -10C. Still got water "blow back" from the melting snow and ice on the hood. +14 C today, shutters open, still got water "blow back" coming to a stop.

You get "blow back" with the shutter open, partially closed or closed (although it's never showed full closed for me). Makes no difference.