What’s this sound? Rubi Diesel doesn’t do it.

[Jcedvm]

Evening All
I have a 2023 Sport S EcoDiesel that makes a loud buzzing sound on shutdown. Lasts about 2 to 3 minutes. My 2023 EcoDiesel Rubicon does not make this sound. I’ve attached a couple videos. Truck is brand new. Less than three hundred miles. It started the evening I got home from the dealership and after each shutdown since. I’m assuming this is abnormal and requires attention. That said, it seems as those most dealerships leave something to be desired in regard to maintenance on these engines. I figured going in with some knowledge beforehand may be of some help. Thank you all in advance.

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[Jefe1018]

The videos won’t play for me at the moment. However, if it is what I am thinking it is normal, or at least my 21 has done it since new.

 

[kevman65]

The videos won’t play for me at the moment. However, if it is what I am thinking it is normal, or at least my 21 has done it since new.

Sounds almost like a faulty contact that can't hold. A buzzing sound.

 

[Free2roam]

That's mighty loud. I have a buzzing but it's way quieter than that. Mines done it since I got it in 21'

 

[Rusty PW]

My '22 JTRD makes a buzzing sound on shut down too.

 

[RubiNewbCB]

Mine does that now after the recall was done. It never did it before the recall. My JTRD is a 22, built in April 2022, bought in May 22.

 

[Jcedvm]

Mine does that now after the recall was done.

Is it that loud? When I’m in the garage it’s almost annoying.

 

[BigBry]

It’s most likely the def purge. Shouldn’t be that loud though.

 

[GeneralMaximus]

damn i-talian engines!

 

[RubiNewbCB]

Is it that loud? When I’m in the garage it’s almost annoying.

Yes, about the same as when your hood was closed, I haven't listened with the hood open. My recall was just completed on Tuesday.

 

[Jcedvm]

Yes, about the same as when your hood was closed, I haven't listened with the hood open. My recall was just completed on Tuesday.

Wonder why my rubicon doesn’t do it? I ordered it. Took delivery on Christmas Eve so it came with the newer pump. This one I bought off the lot Jan 31st. Pump either came on it or was swapped there. No recall listed on it.

 

[Jteakus]

I think it is a coolant pump cooling the turbo.

 

[RubiNewbCB]

I think it is a coolant pump cooling the turbo.

I wonder if the reflash during the recall reset the cooling pump, like a turbo timer. I was thinking it was an electric fan.

 

[Jcedvm]

I wonder if the reflash during the recall reset the cooling pump, like a turbo timer. I was thinking it was an electric fan.

I’m not a mechanic but I’m fairly certain it’s not a fan.

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