Vibration TSB??
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Joined: Jun 2004
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From: North Carolina
Vibration TSB??
Question: What will TSB DL00296-960426 "Driveshaft & differential-mount changes" fix?
I have a 95, had ball joints replaced, engine & tranny mounts replaced, can't seem to hunt down a vibration under normal to heavy load during normal acceleration between 35-65 mph. I can't figure it out. Maybe the differential mounting is bad??? Would worn our rear bushings cause this? The second I take my foot off the gas, the vibration goes away. It's noticable going up a hill and maintaining my 40mph speed. Any suggestions??? Here is the tsb below.
Driveshaft & Differential - Mount Changes
REF: DRIVELINE/DIFFERENTIAL
NO.: DLOO2-96
DATE: APRIL 26, 1996
MODEL: LS 400
Title: LS 400 DRIVESHAFT & DIFFERENTIAL MOUNT CHANGES
For improved driving smoothness when accelerating from approximately 35 m.p.h., the following production changes have been made:
1. Rear drive shafts phase-matched between inboard and outboard joints.
2. Dynamic spring constant of differential rear mount changed.
3. Dynamic damper added to stabilizer bracket.
PART NUMBER INFORMATION:
PRODUCTION EFFECTIVE:
Starting VIN: JT8BH22F # T0036670
I have a 95, had ball joints replaced, engine & tranny mounts replaced, can't seem to hunt down a vibration under normal to heavy load during normal acceleration between 35-65 mph. I can't figure it out. Maybe the differential mounting is bad??? Would worn our rear bushings cause this? The second I take my foot off the gas, the vibration goes away. It's noticable going up a hill and maintaining my 40mph speed. Any suggestions??? Here is the tsb below.
Driveshaft & Differential - Mount Changes
REF: DRIVELINE/DIFFERENTIAL
NO.: DLOO2-96
DATE: APRIL 26, 1996
MODEL: LS 400
Title: LS 400 DRIVESHAFT & DIFFERENTIAL MOUNT CHANGES
For improved driving smoothness when accelerating from approximately 35 m.p.h., the following production changes have been made:
1. Rear drive shafts phase-matched between inboard and outboard joints.
2. Dynamic spring constant of differential rear mount changed.
3. Dynamic damper added to stabilizer bracket.
PART NUMBER INFORMATION:
PRODUCTION EFFECTIVE:
Starting VIN: JT8BH22F # T0036670
Driver
Joined: Nov 2004
Posts: 148
Likes: 1
From: California
hello, have you inspected your flexible coupling, they are prone to cracking also, your universal joint or spider bearings also worn out, maybe your center support bearing have this checked out, i ve just replaced my flexible coupling, its also on the other site US LOC club , under the heading replace fexible coupling i attachecd some pix to it or email me for pix 
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Joined: Jun 2004
Posts: 76
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From: North Carolina
I don't know what those are, but anyone with 400k miles on anything definetly get's my attention. I'll check out what those are. Are they expensive to replace? It's definetly something in the drive train or engine doing it, and it's getting worse. The whole car wobbles when accelerating, it always has since I got it 10k miles ago. The second you take your foot off, it stops. It also shifts a bit hard into gears. I'm thinking you're right, I've heard these things wear out too. I'm getting to the point where I'm beyond the normal parts wearing out, and into the specialty ones, like a flex-coupling or spider bearing. Can you send me some photos of what I'm looking for? You can send it to me on PM, or rtw211@yahoo.com.
400k miles on same engine and tranny? Dang, now that's impressive!
Thanks Bicol-ini!
400k miles on same engine and tranny? Dang, now that's impressive!
Thanks Bicol-ini!
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