davidlees

This is my first post here and I hope you'll can help. I have an 08 F150 King Ranch 4WD and at speeds above 60 or so I have an annoying rattle/ slapping noise that is outside of the cab and is on the drivers side. I also had the same noise on my 04. I don't remember when it started but I did not have it when the truck was new. It is wind related because if I am driving into a strong head wind it will start sooner. I have tried to find it with no luck. I first though it was from the plastic cowl at the base of the windshield so I used some two sided tape to shim it out a little with no luck. I also put it on my lift and tried to check the plastic guards/deflectors under the truck and so far no luck.

wink182000

On your cowl? the plastic that goes around your wipers, on either end there is a separate piece. on one side of mine i was missing the rubber piece (you can find them on ebay). on the drivers side i was missing the rubber piece and a section of the cowl. The vertical strips along the windshield were rattling under high speeds. rattling at the bottom. It pissed me off so much until i figured it out.


http://www.ebay.com/itm/F400-1q2-Ford-F150-Cowl-Panel-Windshield-Grille-Cowling-Genuine-OEM-2004-2008-/161165751553?pt=Motors_Car_Truck_Parts_Accessories&hash=item25863a3501&vxp=mtr
http://www.ebay.com/itm/2004-2008-FORD-F150-06-08-MARK-LT-WINDSHIELD-WIPER-COWL-RUBBER-ENDS-LEFT-RIGHT-/171175057762?pt=Motors_Car_Truck_Parts_Accessories&hash=item27dad41962&vxp=mtr

06_F150

Also check the trim piece that comes down the side of the windshield, it is held on by clips that can get loose. I had a noise caused by this that sounded like it was from a much lower location. I finally found it by temporarily taping it up and the sound went away, got some new clips and it so far has remained silent

corey_lax

Maybe check your tailgate too. Mine was making some funky noises. I just lubed up the hinges and locks and it went away.

davidlees

Thanks for all the replies. I believe I have found the problem. The end plastic windshield cowl piece was bumping against the fender. I guess I was so fixed on it hitting the windshield that I missed the obvious.