Weird metal vibrating sound?!?!?!?

I am having issues with my 02 SC (supercharged) Xterra it's got 70k miles now. I can here an weird noise it almost sounds like two metal pieces that are vibrating and touching each other. To give you a visual imagine holding a screw driver against your exhaust while you rev it. This is where it gets even weirder, it only happens between 2500-2800 R's. It does it in every gear but neutral or when the car isn't moving i.e. the clutch is in (haven't tried reverse). I checked for anything loose but didn't find anything. Before I had a sound kinda like this one and it was the heat sheild around the cat so I just remedied that problem. So any ideas on what could make that sound only at certain r's and in every gear while moving???

J

Most likely another heat shield somewhere.

I am having issues with my 02 SC (supercharged) Xterra it's got 70k miles now. I can here an weird noise it almost sounds like two metal pieces that are vibrating and touching each other. To give you a visual imagine holding a screw driver against your exhaust while you rev it. This is where it gets even weirder, it only happens between 2500-2800 R's. It does it in every gear but neutral or when the car isn't moving i.e. the clutch is in (haven't tried reverse). I checked for anything loose but didn't find anything. Before I had a sound kinda like this one and it was the heat sheild around the cat so I just remedied that problem. So any ideas on what could make that sound only at certain r's and in every gear while moving???I had this on xterra and it yurned out to be a broken muffler clamp just in front of the muffler. Actually it was only half broken, the top part was gone and it was rubbing against the muffler pipe, so I removed the assembly so it was not needed and the pipe seems secure. Btw the part is around 11 bucks at rock auto I hope this solved your problem.

JI had this on xterra and it turned out to be a broken muffler clamp just in front of the muffler. Actually it was only half broken, the top part was gone and it was rubbing against the muffler pipe, so I removed the assembly so it was not needed and the pipe seems secure. Btw the part is around 11 bucks at rock auto I hope this solved your problem.

I had that happen to me 3 months ago . It turns out it was the catalytic converter came apart internally. I would go to the dealer first before touching it yourself. Chances are the 8 year high mileage warranty on the emissions system covers that. If you fix it yourself or have someone look at it you may void the warranty . They swapped out my entire cat system , free of charge on the warranty . Good luck I hope this helps.