Whistling sound
01-30-2014, 04:41 PM
#21
Senior Member
[QUOTE="andrew29620;3266331"] I think it's the bearing in the alternator. We have have unusually cold weather in South Carolina recently so It may be cold related.[/QUOTE
My truck did the same thing when it was cold. I replaced the CAI, all the accessory pulleys and cleaned the TB and the noise still didn't go away until the alternator was replaced
My truck did the same thing when it was cold. I replaced the CAI, all the accessory pulleys and cleaned the TB and the noise still didn't go away until the alternator was replaced
02-01-2014, 12:06 PM
#23
Solved
I need a little help. I have an 06 fx4. Has 67,000. Recently I have noticed that when I'm spending up around 2000 Rpms I begin to hear a slight whistling sound from the engine area. Almost like a turbo but not nearly as noticeable and far more annoying. As I apply more throttle the whistle gets louder until Rpms drop after it switched gears. Any help is appreciated. Thanks!!!
My truck made a loud off and on again tea kettle whistle noise. Thought it was the air filter tray not sealed correctly. Then I thought it was my alternator because the noise changed to a more whining sound. Turns out it was the serpentine belt tension pulley bearing was completely shot and even hard to turn. Replaced it today and now the engine is as quiet as a church mouse. Finally!
Check out this link: http://www.fordf150.net/forums/viewt...?f=31&t=114199
Last edited by Jeff50; 02-01-2014 at 10:31 PM. Reason: Found a forum link to a video on how to fix this.