2009 4 banger 4x4 reg cab, manual with 1,200 miles.
I'm not ready to take it to the dealer because they will just blow smoke up my --- and say give it time, it's new and breaking in or they will say they don't hear it blah blah.
I searched and the similar things I found were the exact opposite of what I'm noticing. There were others describing similar noise but they only have it on acceleration.
When I drive at freeway speeds in 5th and to a slightly lessor extent 4th gear, there is a noise coming from either clutch, trans, driveshaft or rear end. Sounds like rear end to me or right under where the cab meets the bed. It never makes this noise in 1st-3rd at any speed, only 4th and 5th.
When cruisng on the freeway, there is no noise at all. But if I take my foot of the gas or push the clutch in and coast, it makes a driveline noise that sounds kind of like a strong crosswind blowing, with a hint of mechanical sound (metal to metal).
No it it not a wind noise, that's just kind of what it sounds like.
It's not really loud but can definatly hear it no problem. The faster I go then take my foot off, the more pronounced it is. It's also more pronounced going down a grade on the freeway and taking my foot off. At first I thought it only did it under engine braking but also does it if I press the clutch in and coast. Sounds kind of subtle but also seems like a noise that could just as well cause something really bad, like a huge clunk, thud, grind etc then locking something up. It makes this noise probablly 90% of the time. Other times on the freeway (rarely) it doesn't do it at all.
For now I'm just going to drive it till it gets bad enough for the dealer to have no choice but to acknowledge it. Dealer moto's seem to be if it ain't literally broke, they won't fix it or even look at it, though they say they will have looked at it.
I was thinking possibly bad rear end gears or sloppy U joint someplace.
My 350Z makes a crappy noise in nuetral with the clutch out but it's totally normal for that car.
Other than that noise only other problems I have come across is the radio shutting itself off sometimes or shutting off or on if you tap the dash hard enough. Aftermarket radio will fix that.