That hasn't been my experience. However, many people with this vehicle, including me, have noticed a rattle or vibration at 1400-1500 rpm.
I don't think this is linked to an rpm level, and it certainly is not a vibration. It sounds disconcerting like a rather loud breaking of wind! The dealer was quite convincing that is 'normal', but it appears that it is only normal for my Jeep! I will get it looked into while they are doing the catalytic converter replacement.That hasn't been my experience. However, many people with this vehicle, including me, have noticed a rattle or vibration at 1400-1500 rpm.