The other day while driving, I noticed that I get this whistling/buzzing noise coming from my firewall of my '96 Bronco when I hit about 40 mph. It is definately caused by air coming in somewhere, but I have no clue where. It sounds kind of like a kazoo!!! Anyone have any suggestions what could be causing this, or what to look for?

 

any acessories added?

 

Nope. I'm thinking something may have came loose, or off, and now air is just blowing through whatever it is to make the noise. I just can't figure out what or exactly where it is, since it only occurs above 40 mph.

 

Check your air filter housing see if anything is loose. Also check all your vacuum lines and emission control system lines....sounds like an air leak.

Bob

 

Are you sure it's air? I'm really not that familiar with the '96's, so I'm not even sure if they still used a speedometer cable (versus, say, some sort of electronic pickup and wire), but if they did, could this be a possibility? My '85, and a number of '80's pickups I've seen, all get a sort of buzz or whistle behind the dash, in the firewall area, when the speedo cables get dry and need to be re-lubed. May not apply to yours; just a thought.

 

Do you have power brakes? My '83 started to whistle, then it go
worse when the brakes were put on...It was the booster leaking vacuum.

Joe

 

[updated:LAST EDITED ON 07-May-02 AT 10:15 PM (EST)]I have a buzzing sound from the middle of my dash
it started after they R&R my tranny I though it had something to
do with the fly wheel or the torque converter but im still not shure
good luck .............Jeff..........