Strange noise from engine

[MightyJeep]

Hello everyone. Just got a 2018 Jeep Wrangler Unlimited and loving it! Noticed a strange noise coming from the 3.0L V6. Usually happens when on higher RPMs and then goes away. Sounds like it’s right behind the steering wheel. It’s not a slush or water but somewhat of a hiss. Seen other threads here with a clicking noise and it’s not that. Gets louder with the RPMs and then stops. Was tough to get it on video but check this out. Thanks everyone!

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[garykk]

Your link does not work. The only thing that I can think of is that the brake system is located on the other side of the firewall and could be a vacuum leak.

 

[MightyJeep]

Your link does not work. The only thing that I can think of is that the brake system is located on the other side of the firewall and could be a vacuum leak.

I looked for any loose cables but couldn’t find any. Any suggestions for finding/fixing the vacuum leak?

thank you!

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