Let’s play a game of guess the noise

[Gmackr02]

2006 Jeep Wrangler Sport 4.0L Automatic
So my Jeep sat for 3 months with no issue. Started it up and it began this whining noise. From what I’ve figured out, it’s not RPM based, but speed based. It only starts when I hit 30 MPH and doesn’t stop until I’m under 30.

It’s ungodly loud to the point where even my music won’t go over it. Literally any guesses are welcome. I’ve had 13 mechanics in my area listen to the sound and say “I’ve never heard any vehicle make this sound”. I think I got the video uploaded correctly, please tell me if it's not!

 

[GPK03X]

So my Jeep sat for 3 months with no issue. Started it up and it began this whining noise. From what I’ve figured out, it’s not RPM based, but speed based. It only starts when I hit 30 MPH and doesn’t stop until I’m under 30.

It’s ungodly loud to the point where even my music won’t go over it. Literally any guesses are welcome. I’ve had 13 mechanics in my area listen to the sound and say “I’ve never heard any vehicle make this sound”. If someone can tell me how to insert a video to show you I will, but I can’t figure it out myself lol

You need to fill out your profile so the knowledgeable people on here can help you. They will want to know what year ,engine and transmission.

 

[Chris]

Upload a video to YouTube then copy and paste the URL here and it will automatically embed.

 

[Gmackr02]

You need to fill out your profile so the knowledgeable people on here can help you. They will want to know what year ,engine and transmission.

Thank you for letting me know! I have everything updated now!

 

[Gmackr02]

Upload a video to YouTube then copy and paste the URL here and it will automatically embed.

Thank you! I got it! What a life saver!

 

[Chris]

Is it audible from outside the vehicle or only inside? Or do you know?

 

[Gmackr02]

Is it audible from outside the vehicle or only inside? Or do you know?

I am not sure if it is audible from outside, but I can only assume with how loud it is that you would hear from outside the vehicle.

 

[MikeE024]

I’d consider using a mechanical stethoscope or long screwdriver to see if it’s coming from your AC compressor, water pump, PS pump, alternator pulley, tensioner pulley, or idler pulley.

Does anything change if the AC is on or off? How do your coolant and PS fluid levels look?