Grinding noise from engine

[Xiaofeng Mu]

Hi,

Took the delivery of R 6 months ago and put 2600 miles on the truck. Recently I noticed grinding noise like lawn mower (without severe vibration) from engine when driving sporty. Specifically when put 50% gas, then lift to 10% gas and then put to 50% gas again, the noise starts. It goes off when gas is completely lifted and never notice it again in the same drive.

Normal drive mode, 2H, 50-60mph @ 3.5-4.5 krpm.

Any thoughts on this problem? Thanks.

Edit 1: suspect it’s clutch or supercharger (just feeling)

 

[thatJeepguy]

Hi,

Took the delivery of R 6 months ago and put 2600 miles on the truck. Recently I noticed grinding noise like lawn mower (without severe vibration) from engine when driving sporty. Specifically when put 50% gas, then lift to 10% gas and then put to 50% gas again, the noise starts. It goes off when gas is completely lifted and never notice it again in the same drive.

Normal drive mode, 2H, 50-60mph @ 3.5-4.5 krpm.

Any thoughts on this problem? Thanks.

Edit 1: suspect it’s clutch or supercharger (just feeling)

why not skip the internet troubleshooting and take it to the dealer as its under warranty right? Even if someone tells you the remedy are you going to wrench on your 150k truck?

 

[mph4]

Could be something else like a loose trim piece as well that's causing the sound based on resonating with engine speed or throttle?

As suggested, I'd take it to the dealer. Yay warranties.

 

[trav7314]

why not skip the internet troubleshooting and take it to the dealer as its under warranty right? Even if someone tells you the remedy are you going to wrench on your 150k truck?

150K truck...that's painful to read