Thread: 1st gear noise
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Old 07-04-2009, 01:32 AM   #64 (permalink)
ZKindaGuy
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Join Date: May 2009
Location: Ohio
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Drives: 370Z-AT7 Tour+Sport
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Quote:
Originally Posted by rench View Post
First off... Hi all, new member and new z owner (always been a nissan/z fan, finally jumped).

Curious if any other 370 owners have heard a whine/noise in 1st gear after everythings warmed up? Out of the driveway there isn't anything... but drive around and get everything nice and warm, and first gear sounds horrible. I had a nissan tech ride with me (and I used to work on cars, even nissan for over a yr), He agrees it sounds horrible but dealer didn't wanna make it official yet so he said he would drive another one or two and they would get back to me.... I'm not worried as its warranteed but... just wondering if many others are hearing this.

I did find one review of the many I read thru (wanna say it was automobile mag web review but not 100%) that mentioned first gear sounding like they stole it from a garbage truck. Just curious if this is uncommon/rare or if everyone hears it...
There are a couple of things going on. Based on this same problem initially originating pressent in the 07 350Z's the following noises were reported:

1. Clutch chatter - turned out to be a presure plate adjustment was required.

2. A similar but lesser volume chatter - turned out to be the carbon-fiber drive-shaft when it spins and was something that was not fixable....its the physical nature of carbon-fiber in shaft shapes when thye spin..they vibrate.

3. The shrill-like whine in 1st gear - usually an indication that the gears are not shimmed properly however most all 350Z and 370Z I have owned or been around have this shrill whine in 1st gear. It is so prevalent that I am beginning to think it is a normal sound.

My 370Z has #2 and #3 but I don't bother endlessly searching trying to chase these things down as there doesn't appear to be any damage occurring on ones that have been examined in the shop, including my 350Z that I once took in.
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