Rattle at high RPM acceleration

[2019rams]

2019 Ram 1500. I’ve noticed this rattle sound when I’m accelerating quickly at high rpm. Sounds like a metal clanking rattle sound from maybe underneath? Any ideas? That wouldn’t be a cam/lifter issue sound right?

https://imgur.com/a/H1U79Gh

 

[Scram1500]

Wasn't able to hear it, but wouldn't be surprised if it was pinging. Try some higher octane or different brand of gas

 

[2019rams]

Wasn't able to hear it, but wouldn't be surprised if it was pinging. Try some higher octane or different brand of gas

Yeah it’s a bit tonight to hear you might have to put the phone up to your ear. It’s at the top end of the RPM. It’s more of a clanking rattle sound…

 

[ikreider]

I can hear it, my 21 does the same and I’m thinking because of the fuel. I’m currently at about 1/4 tank and will be topping off with 93 today to see if that solves it.

 

[Scram1500]

In my experience Mobil and Shell makes my truck ping, even with 93. Gulf and Sunoco however I hear zero rattles or ping and that's using 89

 

[ikreider]

Just filled up with 93 from speedway, did one 20-50mph pull and it did not ping at all. Will update as I go…

 

[2019rams]

Just filled up with 93 from speedway, did one 20-50mph pull and it did not ping at all. Will update as I go…

That’s interesting thanks for the info. I’ll try that when my tank gets low and see if that’s it. If it doesn’t then my other though could maybe be a loose heat shield flapping?

 

[ikreider]

That’s interesting thanks for the info. I’ll try that when my tank gets low and see if that’s it. If it doesn’t then my other though could maybe be a loose heat shield flapping?

My sound was identical to yours, I don’t think it’s a heat shield. Next time I go out I’ll jump on it again and see what it does.

 

[ikreider]

Went out for a quick spin, went 50,75,100% throttle and I didn’t hear anything. In the past it’s been pretty consistent under load.

 

[2019rams]

Went out for a quick spin, went 50,75,100% throttle and I didn’t hear anything. In the past it’s been pretty consistent under load.

That’s really interesting thanks. I’ll try that when I refill this weekend.

 

[asgadf/lkjnadsfg]

LIke the others, I couldn't hear it, and I vote with them on fuel. If I use 87 octane and stand on it, the engine sounds like someones shaking a can full of coins or marbles. It's much easier to hear with the windows down and accelerating next to something that will bounce the soundwaves back to me, another truck, a big retainer wall, something like that. With 89 octane it goes away.