Torque Converter Vibration
Thread Starter
Instructor
Joined: Oct 2003
Posts: 239
Likes: 0
From: Incline Village NV
Torque Converter Vibration
I just installed a new set of 3.42's and a Precision Industries Torque Converter with a 2700 stall. I am experiancing a vibration between 3200 and 4200 RPM's when accelerating/decelerating hard or revving the engine hard in neutral in the same RPM range. I can both feel and hear the vibration, yet when I'm cruising it's gone! (The shop thinks it's the vanes in the converter and said I shouldn't be concerned, however, I dont' have a clue how a converter works much less what's inside one!) The car performs great and I'm really happy with the change. Has anyone else experianced this situation and is it something I should worry about?
:confused:
:confused:
Burning Brakes
Joined: Oct 2001
Posts: 834
Likes: 0
From: Grayson Ga.
Re: Torque Converter Vibration (tahoeC5)
I (The shop thinks it's the vanes in the converter and said I shouldn't be concerned, however, I dont' have a clue how a converter works much less what's inside one!)
[Modified by Wt99C5, 6:06 PM 3/13/2004]
Thread Starter
Instructor
Joined: Oct 2003
Posts: 239
Likes: 0
From: Incline Village NV
Re: Torque Converter Vibration (redvett01)
That sounds like a reasonable approach. Can that be done without removing the trans? Seems like I recall that there is an inspection cover that allows access to the converter bolts.
Thanks! :)
Thanks! :)
Drifting
Joined: May 2002
Posts: 1,607
Likes: 1
From: San Francisco CA
Re: Torque Converter Vibration (tahoeC5)
I would phone up Precision Industries and see what they have to say. To me it sounds like the converter is way out of balance and that can not be good :(
[Modified by SFVetteman, 6:16 PM 3/13/2004]
[Modified by SFVetteman, 6:16 PM 3/13/2004]
Melting Slicks
Joined: Jun 2002
Posts: 3,060
Likes: 3
From: Dublin CA
Re: Torque Converter Vibration (tahoeC5)
I have the same problem with a Precision Industries Vigilante 3000. But the vibration is there no matter what throttle amount or gear or speed. It's only related to rpm and comes from the back.
Indexing does not seem a good idea, since the torque converter and driveshaft should be balanced independently of each other. Maybe that would make sense if the factory converter and driveshaft were balanced together.
[Modified by blu00rdstr, 6:28 PM 3/13/2004]
Indexing does not seem a good idea, since the torque converter and driveshaft should be balanced independently of each other. Maybe that would make sense if the factory converter and driveshaft were balanced together.
[Modified by blu00rdstr, 6:28 PM 3/13/2004]
Le Mans Master
Joined: Jan 2003
Posts: 6,298
Likes: 0
From: Tyler TX
Re: Torque Converter Vibration (blu00rdstr)
I have the same problem with a Precision Industries Vigilante 3000. But the vibration is there no matter what throttle amount or gear or speed. It's only related to rpm and comes from the back.
Indexing does not seem a good idea, since the torque converter and driveshaft should be balanced independently of each other. Maybe that would make sense if the factory converter and driveshaft were balanced together.
[Modified by blu00rdstr, 6:28 PM 3/13/2004]
Indexing does not seem a good idea, since the torque converter and driveshaft should be balanced independently of each other. Maybe that would make sense if the factory converter and driveshaft were balanced together.
[Modified by blu00rdstr, 6:28 PM 3/13/2004]
Burning Brakes
Joined: Nov 2000
Posts: 832
Likes: 0
From: Joplin Mo
Re: Torque Converter Vibration (redvett01)
Have them try indexing the converter. In simple terms remove the three bolts and rotate it 1/3 and bolt it up and test drive it until its OK. :flag
This is one of the suggested fixes straight out of the service manual for vibration in the drive train.
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Melting Slicks
Joined: Jun 2002
Posts: 3,060
Likes: 3
From: Dublin CA
Re: Torque Converter Vibration (tahoeC5)
It's a mild vibration and not heavy, just enough to notice when passing through a certain rpm range. I installed the converter 6 weeks ago with the FLP trans. I thought it was associated with getting used to a high stall and not getting the fluid level right, or the trans rubbing against something. I've only driven it really hard on an EASE run, but all driving has been on the street with street tires.
Thread Starter
Instructor
Joined: Oct 2003
Posts: 239
Likes: 0
From: Incline Village NV
Re: Torque Converter Vibration (blu00rdstr)
Just got off the phone with Precision Industries, looks like I'll have to send the converter back. They are standing by their warranty and want to make it right. The downside is that my ride will be down for 10+ days with shipping, evaluation, reinstall, etc.... I'll give you a post when it's all done. :(
