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Anyone ever do motor mounts on Bentley FS Gt speed?

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Anyone ever do motor mounts on Bentley FS Gt speed?

 
  #1  
Old 03-20-2019, 03:34 PM
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Anyone ever do motor mounts on Bentley FS Gt speed?

im getting vibrations I’ve done a ton of work on the suspension to no avail. VAG is not picking up any motor mount codes. I’m getting vibration at 2000rpms driving or in park vibrations in the middle of car? I can feel it in my gear shifter. What are the symtoms of a bad motor mount?
 

Last edited by Bentley45; 04-18-2019 at 01:06 AM.
  #2  
Old 03-20-2019, 05:27 PM
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Originally Posted by Bentley45 View Post
im getting vibrations I’ve done a tone of work on the suspension to no avail. VAG is not picking up any motor mount codes. I’m getting vibration at 2000rpms driving or in park vibrations in the middle of car? I can feel it in my gear shifter. What are the symtoms of a bad motor mount?
Hello Bentley45,
Being you have a 2010 FS, you engine mounts are not active afaik, as in no electrical plug/wiring, so no codes for bad engine mount as one would have in a 2004-07ish GT/FS, the 2006 FS I believe had the active engine mounts, but on a late 07 W12 engine I recently broke down they were the non active mounts, also the same on an 08 engine I broke down, and the 2014 engine and trans I am working on also have the non active mounts, one thing to look for at the mounts is a brown goo leaking out of them, or if you have the hood up and put it in forward gear with your foot firmly on the brake and slowly apply throttle and watch to see if the engine lifts a good amount, you would do the same in reverse gear, also don't forget to check the 2 transmission mounts at the rear of the trans, 1 on each side.
Being you state that the vibration is the even in park, that rules out all suspension, axles, cv joints, etc., any transmission codes, trans service ?


.
 

Last edited by Johnny Hotspur GT; 03-20-2019 at 05:39 PM. Reason: Add pictures
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Old 03-20-2019, 06:06 PM
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This is what a Bentley dealership did to try and hide the vibration in a 2014 with 4000 miles on it, wrapped the trans with plates and black goo, vibration persisted so new trans installed, still there, then new complete engine installed, still there, the story from the service rep I spoke with while researching the items I had purchased shown in my rebuild thread was that it ended up being something mount wise or with the body of the vehicle, when I pressed further for answers, the nice attitude quickly went to "what are you doing with these Bentley items" he said "they were to be destroyed", and he didn't like the fact there were sold at auction.
So, sorry I don't have the complete answer.


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Old 03-20-2019, 06:26 PM
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Johnny hotspur GT itís amazing that there is no sensor on a new 2010 Bentley and the 06 has a plug sensor on it. It almost feels like a drive shaft rattle on acceleration? I wonder what could it be? I thought maybe a loose exhaust system? Thanks for your feedback
 
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Old 03-20-2019, 07:14 PM
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Originally Posted by Bentley45 View Post
Johnny hotspur GT itís amazing that there is no sensor on a new 2010 Bentley and the 06 has a plug sensor on it. It almost feels like a drive shaft rattle on acceleration? I wonder what could it be? I thought maybe a loose exhaust system? Thanks for your feedback
It's not a sensor, it's an actual electronic engine mount, meaning that it is filled with a special liquid that stiffens and softens depending on how much electricity is sent to it, that was used to counter the vibration.
I myself was shocked to see that they were removed from the later 2007 onward, although they did fail a lot in the Audi's....
 
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Old 03-20-2019, 07:25 PM
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Do you have any ideas for me?
 
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Old 03-20-2019, 07:40 PM
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Originally Posted by Bentley45 View Post
Do you have any ideas for me?
Well, what concerns me is that you say it vibrates at 2000 RPMs in park, so that would have nothing to do with the drive shaft, axles, or anything else in the driveline, now if it's much worse when you're driving and accelerating then it is in park let me know, but if it's doing it in park at 2000 RPM I would be checking your rear transmission mounts, motor mounts, exhaust, anything around that might be connecting to the body in any way, something that might have got knocked out of place or something, did you run over something in the road possibly, and I would scan the transmission to see if there's any stored codes, how about putting it on a lift and bringing the engine to 2k while having someone listen and feel for it below, then put it in gear on the lift and do the same.
 
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Old 03-20-2019, 07:56 PM
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How many miles on your 2010 ?
 
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Old 03-20-2019, 08:00 PM
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Wow that sounds like good suggestions.. I have 133k on it I will keep you posted. Thank you.
 
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Old 03-26-2019, 04:53 PM
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Update Vibration Issue Solved!

I needed 2 motor mounts and 2 transmission mounts to stop my car from vibrating on acceleration. Now my car is running perfectly smooth on acceleration the
cost, $1471 parts $1180 labor, express shipping $110, tax $77.98, $3.25 hazmat, total $2843.16. I want to thank everyone for your input and suggestions. Also The motor mounts on the 07 and above will not give you any warning light or fluid leak so the visual test will not help you.

Old mounts.

New mounts on left old on right look at the height difference all rubber inside smashed.

Left new transmission mount right old transmission mount.
 

Last edited by Bentley45; 03-28-2019 at 12:34 AM.
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Old 03-26-2019, 07:36 PM
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The procedure for this job would have been a good write-up. Perhaps we can bribe the mechanic with a pizza. 🤔
 
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Old 03-26-2019, 08:22 PM
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I believe he had to remove the exhaust system and the heat shields above them to get to transmission mounts. The engine mounts are in front of the control arm on subframe I believe.
 
 
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