Notices
Maintenance & Repair 350Z up keep and diagnosing/fixing problems

Strange transmission rattle

Thread Tools
 
Search this Thread
 
Old 10-06-2005, 04:47 PM
  #1  
Fear Night
Registered User
Thread Starter
 
Fear Night's Avatar
 
Join Date: Mar 2004
Location: B'ham, AL
Posts: 161
Likes: 0
Received 0 Likes on 0 Posts
Default Strange transmission rattle

At around 1-1.2k rpm a loud rattle can be heard from under the car. It only happens when I pass or hold this rpm range. Also, it only does it when the car is in gear. If I rev in neutral through this range no sound at all can be heard (which makes me think it's the tranny). The strange part is, once the engine is up to normal operating temp the sound goes away all together. Is anybody else experienceing similar problems?
Old 10-06-2005, 04:52 PM
  #2  
plumpzz
New Member
iTrader: (10)
 
plumpzz's Avatar
 
Join Date: May 2005
Location: Jersey, New
Posts: 7,146
Likes: 0
Received 0 Likes on 0 Posts
Default

Is it a rattle or is it a rumble? The rumble is normal, and it means ur shifting too early.
Old 10-06-2005, 06:13 PM
  #3  
Fear Night
Registered User
Thread Starter
 
Fear Night's Avatar
 
Join Date: Mar 2004
Location: B'ham, AL
Posts: 161
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by plumpzz
Is it a rattle or is it a rumble? The rumble is normal, and it means ur shifting too early.
More of a rattle. It doesn't happen when I shift though ... the sound occurs anytime I hit that rpm range while still in gear. It only seems to happen in 1st as well.
Old 10-06-2005, 06:31 PM
  #4  
DavesZ#3
350Z-holic
iTrader: (26)
 
DavesZ#3's Avatar
 
Join Date: Jul 2003
Location: Louisiana
Posts: 15,887
Likes: 0
Received 23 Likes on 18 Posts
Default

Could it be exhaust pipe vibrating against something?

When you rev in neutral, there is no load on the engine so you don't get that small amount of twist from the torque. That twist could be shifting the cats or Y-pipe enough to rub or vibrate on something.
Old 10-06-2005, 06:32 PM
  #5  
Netko350Z
Registered User
iTrader: (8)
 
Netko350Z's Avatar
 
Join Date: Dec 2004
Location: Pennsylvania
Posts: 10,033
Received 7 Likes on 6 Posts
Default

Exhaust system.


The temp change makes me think it is that.
Old 10-06-2005, 06:34 PM
  #6  
plumpzz
New Member
iTrader: (10)
 
plumpzz's Avatar
 
Join Date: May 2005
Location: Jersey, New
Posts: 7,146
Likes: 0
Received 0 Likes on 0 Posts
Default

If its a rattle chances are its either something in ur exhaust system hitting something else.. how old is your clutch btw?
Old 10-07-2005, 10:27 AM
  #7  
Fear Night
Registered User
Thread Starter
 
Fear Night's Avatar
 
Join Date: Mar 2004
Location: B'ham, AL
Posts: 161
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by plumpzz
If its a rattle chances are its either something in ur exhaust system hitting something else.. how old is your clutch btw?
15k miles
Old 10-09-2005, 11:38 PM
  #8  
HockeyZ39
Registered User
 
HockeyZ39's Avatar
 
Join Date: Mar 2005
Location: Dallas Texas
Posts: 3,234
Likes: 0
Received 0 Likes on 0 Posts
Default

I also have a rattle in that range in first. It only seems to happen when I let the clutch out to fast with out enough gas, is this normal? Mine is not my exhaust I know that, I had mine inspected over and over for a rattle I had in the 3k range. Warm or not my car makes this noise as well.
Old 10-09-2005, 11:59 PM
  #9  
dcmaxclub
Registered User
iTrader: (12)
 
dcmaxclub's Avatar
 
Join Date: Apr 2005
Location: dc/md
Posts: 1,462
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by HockeyZ39
I also have a rattle in that range in first. It only seems to happen when I let the clutch out to fast with out enough gas, is this normal? Mine is not my exhaust I know that, I had mine inspected over and over for a rattle I had in the 3k range. Warm or not my car makes this noise as well.

I had that rattle when you release the clutch checked out last week. The mechanic said it was just the tranny under load, and it's more pronounced in the Z than other Nissans. I also tested out a couple of new Z's and they had the same noise. If we're talking about the same thing than it's normal.

I'm not sure about the original poster's noise though
Old 10-10-2005, 12:11 AM
  #10  
HockeyZ39
Registered User
 
HockeyZ39's Avatar
 
Join Date: Mar 2005
Location: Dallas Texas
Posts: 3,234
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by dcmaxclub
I had that rattle when you release the clutch checked out last week. The mechanic said it was just the tranny under load, and it's more pronounced in the Z than other Nissans. I also tested out a couple of new Z's and they had the same noise. If we're talking about the same thing than it's normal.

I'm not sure about the original poster's noise though
Ya sounds like the same thing, If I feather correctly there is no noise. Its just happens when the clutch comes out to fast with out enough gas. Thanks for the info!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
lapham3
Maintenance & Repair
8
10-07-2022 03:15 PM
07ZEKE
Brakes & Suspension
2
08-23-2021 09:15 PM
burglapfd
Maintenance & Repair
9
12-06-2020 01:04 PM



Quick Reply: Strange transmission rattle



All times are GMT -8. The time now is 01:16 PM.