Hood Shake
#1
#2
#4
Here is one TSB, there may be another one by now.
TSB 04-18-8 HOOD FLUTTER AT HIGHWAY SPEEDS
ISSUE:
Some 2004 F-150 vehilcle may exibit hood movement at the back of the hood due to high air turbulence, while driving at highway speeds. This condition may be amplified by the installation of an accessory bugshield and may be more pronounced when passing an on-coming vehicle on a two lane road.
ACTION:
Refer to the following Service Procedure.
SERVICE PROCEDURE:
Confirm that the hood is flush with the front fenders at each front corner. I the hood is under-flush, adjust the hood stops to raise the hood flush with the tops of the front fenders. Check the amount of drag at the rear hood to cowl seal with a piece of paper. Place a piece of paper between the seal and hood, close the hood and then slowly pull the paper out. It there is sufficient drag, indicating good seal to hood contact, return the vehicle to the customer. If there is little to no drag, obtain locally a piece of fuel hose147cm long& 11mm diameter( 58" long & 3/16" diameter). Lube the hose with a soap-based solution and install the hose inside the hood seal bulb.
Here is a link to a hood shake thread:
http://www.fordtrucks.com/forums/sho...ght=hood+shake
TSB 04-18-8 HOOD FLUTTER AT HIGHWAY SPEEDS
ISSUE:
Some 2004 F-150 vehilcle may exibit hood movement at the back of the hood due to high air turbulence, while driving at highway speeds. This condition may be amplified by the installation of an accessory bugshield and may be more pronounced when passing an on-coming vehicle on a two lane road.
ACTION:
Refer to the following Service Procedure.
SERVICE PROCEDURE:
Confirm that the hood is flush with the front fenders at each front corner. I the hood is under-flush, adjust the hood stops to raise the hood flush with the tops of the front fenders. Check the amount of drag at the rear hood to cowl seal with a piece of paper. Place a piece of paper between the seal and hood, close the hood and then slowly pull the paper out. It there is sufficient drag, indicating good seal to hood contact, return the vehicle to the customer. If there is little to no drag, obtain locally a piece of fuel hose147cm long& 11mm diameter( 58" long & 3/16" diameter). Lube the hose with a soap-based solution and install the hose inside the hood seal bulb.
Here is a link to a hood shake thread:
http://www.fordtrucks.com/forums/sho...ght=hood+shake
#6
Originally Posted by toypuller
I believe there is a TSB for that condition. I also seem to remember that it can be caused by certain aftermarket bug deflectors. Do you have one?
It seemed to be a common problem a few months back but I have not seen it mentioned recently.
It seemed to be a common problem a few months back but I have not seen it mentioned recently.
#7
Originally Posted by Missouri Mule
That will definitely cause a hood vibration. Last bug deflector I ever put on a truck. I'll leave the truck the way the engineers decided.
This was all with Ford's low profile.