MUDSUX
Member Since: 30 Jan 2013
Location: US
Posts: 7
 
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Did anyone ever find a definitive source and solution for this vibration or sound? It is driving me crazy.
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 27th May 2021 1:00 pm |
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Brookert
Member Since: 03 Apr 2020
Location: Suffolk
Posts: 52
  
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This is my understanding of it.
The earlier F77 torque converter was noisy, whether there's a design flaw or just wear, I'm not sure. It was superceded by the Y85 version.
My 07 d3 is noisy. A friends early d4 is silent as the grave. Both have the zf 6hp26 gearbox I believe.
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| 28th May 2021 11:38 am |
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Ruper
Member Since: 28 Jun 2019
Location: Virginia
Posts: 318
 
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| Drive Shaft Pillar bearing |
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I recently replaced my drive shaft assembly, and found that the pillar block bearing on the shaft was worn out beyond recognition. My noise was the same but more pronounced when the shaft back lashed upon coming off the throttle and when the accelerator would kick into power up a hill. Once I changed the drive shaft out, the sound along with a knocking vibration from the rear of the vehicle went away after that.
I'd check the pillar bearing if you have not already, but it is better done with the rear wheels jacked off the ground as it releives the pressure that a locked down wheel has due to being grounded. 2005 Land Rover D3, 4.4L V8, Maya Gold Metallic
1966 Scout 800, 196 cu.in.
1975 Scout II, 392 cu.in.
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| 2nd Jul 2021 1:06 am |
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MUDSUX
Member Since: 30 Jan 2013
Location: US
Posts: 7
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Quote:I recently replaced my drive shaft assembly, and found that the pillar block bearing on the shaft was worn out beyond recognition. My noise was the same but more pronounced when the shaft back lashed upon coming off the throttle and when the accelerator would kick into power up a hill. Once I changed the drive shaft out, the sound along with a knocking vibration from the rear of the vehicle went away after that.
I changed my rear prop shaft and it did not fix the vibration.
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| 2nd Jul 2021 2:01 am |
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MUDSUX
Member Since: 30 Jan 2013
Location: US
Posts: 7
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So just a follow up. I had the same shaking under acceleration at 35-40 and then again at 50-55mph. I have a V8 with automatic transmission. It was driving me crazy. The shaking instantly stopped when I let off the gas. Only shook when under power. Changed my rear prop shaft and it did not help.
Then I noticed a trend. The very first 1/2 mile in the morning there was zero shaking. Then it would start again after the car warmed up. Park for a couple hours and again no shaking the first 1/2 mile. So heat definitely had something to do with it. Then I realized the transmission fluid is warming up and the viscosity must be affecting the torque converter or something in the autobox itself.
Some googling turns up "transmission shudder". I bought some Lubeguard Instant Shudder Fixx, may have a different name in Europe, put it in and the shaking/shudder is instantly gone. I know it's a temporary fix but at least I now have a lead on the problem. Hope that helps.
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| 2nd Sep 2021 8:35 pm |
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kajtzu
Member Since: 11 Aug 2017
Location: Helsinki
Posts: 6684
 
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“Dr. Tranny” is the most common brand here in Europe 
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| 2nd Sep 2021 8:49 pm |
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