2006 Accord with 76,300 miles. 6 cylinder, auto. Nice ride. Former lease vehicle we purchased 2 or 3 years back with about 35,000 miles. Anyway we take real good care of car. Last few months we get on again, off again rattle. If you jump on gas petal that seems to guarantee a rattle, but sometimes u get it turning corner. I am pretty good mechanic and it doesn't give me impression of a safety issue or something about to break. It sounds like something has worked its self loose. My problem is I can't nail down where noise is coming from. Sometimes it sounds like its under dash, passenger side. Other times it sounds like its under seats / under carriage and sometimes trunk? Anyway maybe some of u have had same experience and were able to repair. Any help appreciated. Thanks

 

Humm.....well if this was an '08 I'd have you looking at the "third brake light"....

PS- I moved this to gen tech.

 

I would take a look at the exhaust system. Maybe some of the rubber hangars are messed up or a heat shield is loose.