i noticed a rattling/ grinding noise that lasts for ~1 second in my 09 near the lower regions (more to the left) when i'm accelerating but it comes on only in 2nd and 3rd gear. at speeds of 10-30mph, it comes on intermittently and is quite difficult to replicate. doesn't come on when i accelerate reeeeally slooowwww. any idea on what could it be? is it even normal? sry in advance if i'm beating a dead horse.

Check your front sprocket.

I had it and a few of my rear spokes were loose.

check your chain too! Might be loose!

checked my front sprocket nut, looks perfectly fine. maybe it's just some chain slap :D

Don't lug the motor so much. 3rd gear at 10-30 seems like you're trying to get too many MPG's..

Check your skid plate bolts too; when the loosen they rattle intermittently :thumbsup: .

Sounds like piston slap.

piston slap on an 09 with 1000miles. amazing.

i'll check the skidplate asap. weird thing is, the sound is gone, for now.