Start up has gotten loud with metal clanking sound

[howster]

Hi Guys,
I've a 2019 Ram 1500 Laramie 5.7 Gas and in the last month start up has gotten loud. It's a metallic clanking sound about 3-4 times the original loudness and lasts about 5 mins and then noise reduces by about 20%. Regardless it's still a lot louder than normal particularly when accelerating. Also yesterday the truck got stuck in a high gear whilst driving and started to heave, despite being automatic, and I had to pull over, put it in Park and back to Drive to fix the issue. I had a recent service and synthetic oil change so not quite sure what could be up with it. It has about 20,000 miles on it. Attached is the sound. Normally it starts and hums. This sound is much more metally and clanky. Same sound whether push start or remote start. I use 5w20 oil.
Wondering what you think may be the issue. Truck sound:

truck sound.mp3

Listen to truck sound.mp3 by hc #np on #SoundCloud

soundcloud.app.goo.gl

Thanks

 

[Firebird]

Bad torque converter?

 

[mikeru]

It's really hard for me to hear anything metallic in that recording. To me it sounds like an exhaust leak. Where on the truck does it sound the loudest?

 

[huntergreen]

I would start by checking manifold bolts.

 

[howster]

It's really hard for me to hear anything metallic in that recording. To me it sounds like an exhaust leak. Where on the truck does it sound the loudest?

Passenger side near rear wheel seems the loudest.

 

[howster]

I would start by checking manifold bolts.

Weeks back when I noticed it getting a little louder I brought it in for a service/oil change and mechanic thought it sounded ok. He mentioned manifold bolts being an issue with Rams but mine were fine he said. Truck has definitely got a lot louder and even my wife brought it to my attention. For that reason I believe I'm not going daft. I read that the oil filter may be a problem so I bought a Mopar one. I'll revisit the mechanic and ask him to install it with a different brand of fully synthetic oil maybe.

 

[ramffml]

Agree with the others, that doesn't sound like lifter tick so changing the oil filter wouldn't help in that case; but it's probably exhaust.

 

[mikeru]

Passenger side near rear wheel seems the loudest.

That would be an exhaust leak. Check the muffler flange and make sure neither bolt has broken. I wouldn't say it's common, but it seems to be an issue for some people on 5th gens.

 

[howster]

Thanks everyone for the help. I'll report back when it gets diagnosed soon.

 

[howster]

Turns out that bolts in the rear exhaust flange were broken which ruined the exhaust gasket causing the loud sound. Loud issue now fixed. Dramatically quieter. First mechanic missed it and said loudness was normal. Dealership mechanic identified issue and it purrs quietly now. All covered under the 3 year warranty. No cost.
Guess who lost future business and guess who won future business. Thanks everyone for the help.

 

[toakesd]

sounds like i am having the same exact issue with my 2019 1500. the "whooshing" when accelerating uphill and the startup rattle. Are you able to explain where the rear exhaust flange is located? Do you think it's something a that can be fixed in my garage and not at a dealership?