Tachometer jumping, probably due to Nismo flywheel...
06-12-2006, 03:22 PM
#1
Registered User
Thread Starter
Join Date: Jun 2004
Location: Jackson County, GA
Posts: 1,384
Likes: 0
Received 0 Likes
on
0 Posts
Tachometer jumping, probably due to Nismo flywheel...
I am going to have the dealer check it out tomorrow, but I have been noticing that the tach pulsates at idle, and thoughout the rpms. I suspect the Nismo flywheel has worn unevenly, and is not balanced, causing the tach needle to fluctuate a bit.
I have a feeling the flywheel will be out of warranty now, so I will probably just have to deal with it until the clutch wears out. It still drives smoothly, but you can see the movement with the tach as it idles and as you accelerate.
Anyone else have this experience?!
I have a feeling the flywheel will be out of warranty now, so I will probably just have to deal with it until the clutch wears out. It still drives smoothly, but you can see the movement with the tach as it idles and as you accelerate.
Anyone else have this experience?!
09-27-2006, 12:15 PM
#5
Registered User
Join Date: Sep 2006
Location: FL
Posts: 42
Likes: 0
Received 0 Likes
on
0 Posts
Seriously, how can I verify if an aftermarket flywheel has been installed? This 350z also has 19" wheels on it, so the butt dyno will be thrown off a little.
Could I have the service department verify? Is there anywhere to look without taking apart anything if I were able to get it up on a lift?
Could I have the service department verify? Is there anywhere to look without taking apart anything if I were able to get it up on a lift?
09-27-2006, 12:54 PM
#7
Originally Posted by Marshall2K
Seriously, how can I verify if an aftermarket flywheel has been installed? This 350z also has 19" wheels on it, so the butt dyno will be thrown off a little.
Could I have the service department verify? Is there anywhere to look without taking apart anything if I were able to get it up on a lift?
Could I have the service department verify? Is there anywhere to look without taking apart anything if I were able to get it up on a lift?
Trending Topics
09-27-2006, 02:17 PM
#9
Registered User
iTrader: (4)
Join Date: Aug 2006
Location: philadelphia
Posts: 71
Likes: 0
Received 0 Likes
on
0 Posts
wear shouldn't cause imbalance
Originally Posted by KONVERTER
it sounds more like you have sensor issue
I had one aluminum flywheel break on me, and that will cause a balance problem if a chunk comes off -but this is highly unikely on a late model Z.
09-27-2006, 08:33 PM
#10
Registered User
Thread Starter
Join Date: Jun 2004
Location: Jackson County, GA
Posts: 1,384
Likes: 0
Received 0 Likes
on
0 Posts
The dealership said it was caused by the Nismo flywheel. They can wear out of balance, especially since they are thinner, compared to the thicker factory unit.
If you have a lightweight flywheel, especially a Nismo, you'll know it from the sound it makes, and how much quicker the car moves up through the rpms, compared to a car which has the stock flywheel. It sounds like a cement mixer while it idles in neutral. Stock, it was quiet.
If you have a lightweight flywheel, especially a Nismo, you'll know it from the sound it makes, and how much quicker the car moves up through the rpms, compared to a car which has the stock flywheel. It sounds like a cement mixer while it idles in neutral. Stock, it was quiet.
Last edited by VeeTec; 09-27-2006 at 08:35 PM.
09-28-2006, 11:47 AM
#11
Registered User
iTrader: (2)
Join Date: Aug 2003
Location: SoCa
Posts: 2,729
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by VeeTec
The dealership said it was caused by the Nismo flywheel. They can wear out of balance, especially since they are thinner, compared to the thicker factory unit.
If you have a lightweight flywheel, especially a Nismo, you'll know it from the sound it makes, and how much quicker the car moves up through the rpms, compared to a car which has the stock flywheel. It sounds like a cement mixer while it idles in neutral. Stock, it was quiet.
If you have a lightweight flywheel, especially a Nismo, you'll know it from the sound it makes, and how much quicker the car moves up through the rpms, compared to a car which has the stock flywheel. It sounds like a cement mixer while it idles in neutral. Stock, it was quiet.
#2 - It is better ballanced then the factory unit since it is a solid piece not a two piece floating damper type...
I had flywheels as light as 8lbs in my Z and it never did that...
what is your idle set at? if it is below 800 it will do that... (move a little)
Does it jump like 500 RPM? how much does it move around?
09-28-2006, 09:17 PM
#13
Registered User
Thread Starter
Join Date: Jun 2004
Location: Jackson County, GA
Posts: 1,384
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by KONVERTER
#1 - The NISMO Flywheel is the same overall dimensions of the factory unit
#2 - It is better ballanced then the factory unit since it is a solid piece not a two piece floating damper type...
I had flywheels as light as 8lbs in my Z and it never did that...
what is your idle set at? if it is below 800 it will do that... (move a little)
Does it jump like 500 RPM? how much does it move around?
#2 - It is better ballanced then the factory unit since it is a solid piece not a two piece floating damper type...
I had flywheels as light as 8lbs in my Z and it never did that...
what is your idle set at? if it is below 800 it will do that... (move a little)
Does it jump like 500 RPM? how much does it move around?
09-28-2006, 11:11 PM
#15
Registered User
iTrader: (2)
Join Date: Aug 2003
Location: SoCa
Posts: 2,729
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by VeeTec
About 200 rpms at times, even going up through the rpms. It is the flywheel. The dealer confirmed it.
it sounds like your idle is set too low...
If you have a 04.5 or up... you may need to put together an idle stabilizer kit...
If you have installed an intake, make sure the crank case blow by hose on the intake tube is not kinked...
Light weight flywheels make the motor more sensitive to alot of things... including idle...
09-29-2006, 04:11 AM
#17
Registered User
Thread Starter
Join Date: Jun 2004
Location: Jackson County, GA
Posts: 1,384
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by KONVERTER
Find out what your base idle is set at...
it sounds like your idle is set too low...
If you have a 04.5 or up... you may need to put together an idle stabilizer kit...
If you have installed an intake, make sure the crank case blow by hose on the intake tube is not kinked...
Light weight flywheels make the motor more sensitive to alot of things... including idle...
it sounds like your idle is set too low...
If you have a 04.5 or up... you may need to put together an idle stabilizer kit...
If you have installed an intake, make sure the crank case blow by hose on the intake tube is not kinked...
Light weight flywheels make the motor more sensitive to alot of things... including idle...
Thread
Thread Starter
Forum
Replies
Last Post
