weird whistling osund when excelerating???
Freshman User
Joined: Dec 2009
Posts: 41
Likes: 0
From: around peoria illinois
ive been noticing the same high pitch noise to now that its cold, but it only does it when im going down the road, like when i put the cruise on at 70 its whistles constantly, i was thinking it was a window leak or something up there
Elder User
Joined: Feb 2008
Posts: 783
Likes: 1
From: Chicago Area, Illinois
Mine is doing exactly the same. Took off the belt (which is new) and spun each pulley. Nothing seems out of the ordinary, dealer cant "replicate the problem." It is a definate whistle, not a squeal like a belt or pulley and it only does it at 70mph, fully warmed up and going down the highway. It only does it when the temp is below freezing. Never above freezing. Ive read other posts and they all seem to reccomend changing out the alternator but I hate to waste 150 bucks on an alternator and have it still happen. I spun the pulley on my alt and it feels like brand new. Guess ill have to wait till spring when it fixes its self!
Senior User
Joined: Dec 2009
Posts: 177
Likes: 0
From: yooperland
Im going to wait too. got the same issue. I think its temp related with the alternator but I dont think its an issue thats going to effect charging. Too cold to work on anything out here anyways right now.
Posting Guru
Joined: Aug 2008
Posts: 1,211
Likes: 1
Mine is doing exactly the same. Took off the belt (which is new) and spun each pulley. Nothing seems out of the ordinary, dealer cant "replicate the problem." It is a definate whistle, not a squeal like a belt or pulley and it only does it at 70mph, fully warmed up and going down the highway. It only does it when the temp is below freezing. Never above freezing. Ive read other posts and they all seem to reccomend changing out the alternator but I hate to waste 150 bucks on an alternator and have it still happen. I spun the pulley on my alt and it feels like brand new. Guess ill have to wait till spring when it fixes its self!
Elder User
Joined: Feb 2008
Posts: 783
Likes: 1
From: Chicago Area, Illinois
I dont think its door weatherstriping because while the noise is happening i'll give it a lil gas and the sound fades away sharply, the same speed that i step on the pedal....EEEEEEEEEEEEEEEEEEeeeeeeeeeeeeeeeeeeeee then silence. Definately comming from under the hood. If im using the cruise control set at 70mph, i tap the acc button once to go to 71 mph and it stops also. Same thing happens if I slow to 69 mph. Wierd Wierd Wierd............................
Freshman User
Joined: Dec 2009
Posts: 41
Likes: 0
From: around peoria illinois
man good advice from a ford tech NOT mine does the same dam thing and its freaking anoying as hell, 70 whistle 71 no whistle, freaking weird i heard it coming from the windshield but i guess it cant be that now since everyone is saying an alternator
Posting Guru
Joined: Aug 2008
Posts: 1,211
Likes: 1
does the truck make the noise if you turn on the wipers? I have seen the wiper blades make a whistle, but if the noise is dependent on being at 70 mph and not at engine rpm then it's not the alt
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