I no this has probely been posted before cause i have seen it just dont rember where. But has any 1 found where the high pitched whistling noise is comeing from when it gets cold out. Happens when ya get up to about 20 plus and jsut renetly started doing it and is rather anoying. oh what i have is a 3.9 liter manuel 2x4 regular cab 2003 model year any input would greatly be appreciated.

 

ive had the same noise on my 01 4x4. i dont know what it is but it seems to go away after the trucks warmed up.

 

Iv traceds it to the ventalation it only does it when its cold and and when the vents on if i turn it off it stops alltohguth i havent been able to find and holes or leak threw ares on it...yet atleast.

 

There is a TSB for the heater blend door relating to this issue I believe. Nothing major, I just turn up the stereo till the truck warms up.

 

Haha hmmm thats exactly what i have been doing matter of fact. Alltohught aince its warmed up outside its stopepd

 

i just bought my 99 dakota sport 4x4 stick shift, and it seems to be whistling really bad, and even after it warms up its still pretty squeky. how can i tell if this is something big i should be worried about?or how do i stop it? i think the noise is coming from the belts. Also, like you guys said before, it has been pretty cold lately, and snowing a lot, could it just be the belt is wet?sorry for my ignorance, im still very new to being a truck owner.

 

is it a whistiling noise or a sqeucking noise and does it do it if you turn your vent *** to off? also how is the door seals? and door clousre good and tight? The belts would make more of a sqeucking noise. To test it just pop the hood with the engine on and pull the throttel up give it a littel juice get them pullys going and see if it makes any noise. I understand are trucks are a whistler in the cold weather thought acording to a post fruther up in here hope that helps any.

 

Also since you say its new check to see if the previous owner didnt put on a throttel body spacer as they make a whistling noise as well.