Vibration in Drive and OD in higher rpm range.
04-18-2009, 06:20 PM
#1
12 Second Club
Thread Starter
iTrader: (1)
Join Date: May 2007
Location: Meherrin Va.
Posts: 558
Likes: 0
Received 0 Likes
on
0 Posts
Vibration in Drive and OD in higher rpm range. Installed a level 2 performabuilt trans with the 10.5 billet 3000 stall and a cat flexplate. I noticed some vibration in D when I'm at 2500k rpm. What would cause vibration in the higher rpm range? Vibration starts in OD when I'm doing like 80 which puts the rpm around 3k.....the faster I go the more it sounds like a grinding noise. But when I'm crusing in OD at 60 it feels normal.Could it be my rubber motor and trans mount????
04-18-2009, 07:13 PM
#2
If the mounts are stock rubber its not likley however if the are unrethan its very likley.
While there are several posibilites it sounds more resonate based on the RPM range so I would provided you dont have poly urethan "poly mounts" first look at the exhaust make sure its not touching anything. Then check that converter bolts are tight. Or sometime its helps to unbolt then re bolt the converter up.Particulary if during the install the converter bolts may have been used to pull the converter forward this can bend/warp the flex plat out of shape and cause vibration. But generally as a rule if a vibration happens in some particular RPM band it is resonate and not likley from a rotating assembly since that would tend to vibrate under all conditions and RPM .
While there are several posibilites it sounds more resonate based on the RPM range so I would provided you dont have poly urethan "poly mounts" first look at the exhaust make sure its not touching anything. Then check that converter bolts are tight. Or sometime its helps to unbolt then re bolt the converter up.Particulary if during the install the converter bolts may have been used to pull the converter forward this can bend/warp the flex plat out of shape and cause vibration. But generally as a rule if a vibration happens in some particular RPM band it is resonate and not likley from a rotating assembly since that would tend to vibrate under all conditions and RPM .
__________________
04-22-2009, 08:54 PM
#5
12 Second Club
Thread Starter
iTrader: (1)
Join Date: May 2007
Location: Meherrin Va.
Posts: 558
Likes: 0
Received 0 Likes
on
0 Posts
I put the car in neutral and noticed that there was no vibration in any rpm. Maybe it's something dealing with the drivetrain like u joints or drive shaft. Where can I purchase ujoints.....besides the dealership.
04-23-2009, 10:39 AM
#7
Teching In
Join Date: Oct 2007
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
I had that problem also a long time ago, i would get to a certain speed put it in nuetral and the vibration went away, which told me it wasn't the driveshaft.. Come to find out my converter wasn't balanced correctly.. swapped converters with a friend and went away...
