whistle

[stewdecky]

my '46 WC makes a terrible sharp whistle when driving down the high way with the cowl vent open. Sometimes if i am traveling with the wind it is ok but against the wind it blows over the vent and whistle awful. Would like to us my vent in the summer when going down the highway. Any ideas? Does anyone else have this trouble but me? I know it's a 46 but thought some of you guys might have the answer.

[JBNeal]

sounds like that truck has got character...I don't reckon the vent was designed for quiet at 65mph as much as to move air (or as Grandpa used to say, "stir up the rat turds")

[stewdecky]

Maybe just a good set of ear plugs. like i wear when the wife is with me.

[Young Ed]

Do you have your windsheild open or closed? Mine has a whistle too but its usually when I have the cowl vent shut. I believe mine is from the lack of a cowl vent gasket.

[Reg Evans]

Have you tried harmonizing with it ? Kidding !

I had a 47 for many years and don't remember any whistle so can't help there but I sure do like the color.

[Dan Babb]

Does it sound like it's coming from the air hitting the vent door or maybe it's the air hitting something in the cab?

Maybe try putting some type of rubber seal on the inside lip of the door? Or have someone try to figure out the source of the sound while you're driving on an open road (so they can get under the dash and listen there).

Whistles & Rattles can drive you nuts.

[Jerry Roberts]

Mine doesn't whistle when open, even when going down the highway at 65 MPH . Do you have the gasket in place ? I know the gasket seals it when it is closed but I don't know what the problem might be . It is a two position vent when open , do both open positions whistle ?

[Dave72dt]

It could be any seal in the cab doing it. With the vent open, you're pressurizing thecab and the escaping air is causing the whistle. A loose section of you're cowl vent gasket could also do it.

[Don Coatney]

Ever see the movie "THE OUT OF TOWNERS"?

[stewdecky]

thanks for all the input. The color is Dupont B8750 Med Cabernet Red, ford 87-93 code 2H . Yes i do have the gasket in and it whistles at any setting when going into the wind. I usually do not open my crank windshield as the gears ar a little stripped and do't know if i will get it shut again. The whistle comes from air blowing over the vent hole but i can't figure out why it would be deaigned that way. I put some soft putty into the drain hole hopping that would cause it to stop but that just caused more work digging it out after i found out it didn't change anything. And you are right, rattles and noises can drive you crazy.

[Young Ed]

Take some of that 3m blue masking tape and tape a piece of cardboard over the entire cowl vent. Then try it.

[buds truck]

if it has a screen on it you might try spraying silicone on the screen to see if it changes things. Just a thought. On the other side, most trucks whistle because they don't know the words....

[greg g]

Check the lip of the sheet metal top and see if there are any points where its uneven or bent. Then check to see if the seam betweent eh screen and the assembly is in good shape, the check to see if there is anything in the air path under the vent that might be the culprit.

[Jerry Roberts]

Those older trucks didn't have a screen , just an open hole to let the bugs in .