2003 Altima 2.5 Rattling sound @2000 RPM

[quote:ca992d503b="kable008"]2003 Nissan Altima 2.5, Auto Transmission
50k miles

My Altima has recently started to rattle loudly from the engine compartment (I think) around 2,000 - 2,500 rpm. This happens when its in gear as well as in neutral/park.[/quote:ca992d503b]

I am having the same problem with my 2003 at 70k miles. Does anyone have any ideas?

[quote:95998b1cbd="bryanstone2"][quote:95998b1cbd="kable008"]2003 Nissan Altima 2.5, Auto Transmission
50k miles

My Altima has recently started to rattle loudly from the engine compartment (I think) around 2,000 - 2,500 rpm. This happens when its in gear as well as in neutral/park.[/quote:95998b1cbd]

I am having the same problem with my 2003 at 70k miles. Does anyone have any ideas?[/quote:95998b1cbd] - I recently got mine fixed. As it turns out, mine was two loose flex valves in the exhaust system that needed tightening, didn't cost me anything.