Transmission noise (sound like bearing failure)

m4a1mustang · 10-25-2011, 08:06 AM

The noise you hear in neutral is normal. It's a little bit of a knocking/clanking sound.

The clutch chatter is also normal when pulling away from a stop. It's more likely to happen if you give too much throttle while feathering the clutch.

phohman · 10-25-2011, 08:25 AM

When a bearing is going out on the Input gear (main drive gear) The noise will change or even go away while in that range (normally 4th or 5th gear) and be more pronounced in the lower range. If the Trans makes noise in all ranges it would more likely be the Input gear or counter drive gear due to fatigue and an exchange will be your best option. fatigue is normally diagnosed as lack of lubricant.

10-25-2011, 08:06 AM	#1 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6964	The noise you hear in neutral is normal. It's a little bit of a knocking/clanking sound. The clutch chatter is also normal when pulling away from a stop. It's more likely to happen if you give too much throttle while feathering the clutch. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Gear grind sound 7AT?? Transmission problem? help!	Cafiax	Engine & Drivetrain	9	12-19-2011 05:02 AM
Transmission noise after lowering clutch engagement	wdkwang	Nissan 370Z General Discussions	4	03-13-2011 04:35 PM
New transmission = NO gear noise...	6SPD_FTW	Engine & Drivetrain	2	04-01-2010 11:27 PM
Transmission failure	1slow370	Nissan 370Z General Discussions	32	10-22-2009 02:39 PM
2 Nismos transmission failure after highway driving.	Baddriver	Nissan 370Z General Discussions	45	09-23-2009 06:34 PM

10-25-2011, 08:25 AM	#2 (permalink)
phohman Base Member Join Date: Feb 2011 Location: Katy-Houston Tx. Age: 63 Posts: 124 Drives: 2012 370Z Nismo Rep Power: 16	When a bearing is going out on the Input gear (main drive gear) The noise will change or even go away while in that range (normally 4th or 5th gear) and be more pronounced in the lower range. If the Trans makes noise in all ranges it would more likely be the Input gear or counter drive gear due to fatigue and an exchange will be your best option. fatigue is normally diagnosed as lack of lubricant.