[wilben55]

Hi
For some time now I`ve had issues with a terrible high pitched loud squealing sound. The sound seems to be from the engine bay or under the front/middle part of the car.

• The sound appears after driving the car about an hour or so
• The sound is constant with little variation
• The sound seems to be loud all over the engine bay
• The sound is the same at all rpm, maybe a little less loud when accelerating but might be just hard to hear.

I`ve replaced both "fan" belts, and the (3) pulleys except tensioner pulleys

What I`ve tried to diagnostic the issue (with squealing sound present) :

• Spraying silicone grease/lube under the old fan belts to see if the sound went away, without any change in sound.
• Listen with a metal rod to identify the squeal (I did not locate the sound)
• Changed my belts and pulley's without fixing the sound.
• Blocking the exhaust with a rag. (no change in sound

Please I need some tips, I cannot seem to find the problem and it`s quite annoying.

 

[wilben55]

When the noise starts pull over and stop the engine. Then remove the main serpentine belt and start the engine to see if the noise comes back.

Was thinkin about doin that