Engine Mounts

Hi all,
I also have issues with noise/vibration, especially under load, and I found out that the lower the outside temperature, the worse it gets. ( I 'm not sure if my english is correct here...) in winter my car is as loud as a tractor! I wonder if this has to do with the aluminium body.
I would consider to get the engine mounts replaced although that is a costly operation.
here is my 2 cents question : How many mounts are on the TDI engine ? Over the phone, the audi guy told me there are 7 parts.
That sounds like many to me.
 
The 1.4TDI makes contact with the rest of the car through 3 different mounts: the engine mount, the gearbox mount and the torque arm.
Each one of these can be purchased from Audi as a complete kit, meaning you should only need to buy 3 boxes.
The gearbox mount consists of a few parts, the engine mount consists of a few parts, so maybe there are 7 in total, but you don't buy them separately.

Cheers,

Tom
 
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Although I posted earlier that the old torque bar 'dog bone' was not as damaged as I expected, closer examination reveals that the rubber was more detached from the alloy than first thought. It would be possible to push out the inner alloy 'square'. I would suggest inspecting this D/B first especially as the engine and gearbox mounts are so expensive, especially as it does make a dramatic difference to the comfort of driving the car.

I have just read the post that states that the gearbox drain plug is beneath the pressed steel part of the Dog Bone which is now in place with new bolts fitted!!! Looks like I have to remove it again to replace gearbox oil.....so please learn from my mistake!
 
Thanks for your help,
I just bought the dog bone from Audi ( 174 euros, is it silver plated for that price ? :mad: )
I will change it soon at the same time as ARB job. Looking forward to see the improvements !
 
Hi,
Concerning the dog bone, I can't find any torque value on elsawin, so what to do when I mount the new one ?
Shall I just squize the bolt as hard as I can ?
 
timmus said:
Hi Guys and Gals,

I've decided my engine mounts have reached the end of their life and need replacing. However, before I order to bits from Audi, I've got a few questions for those with some knowledge in this area...

Tom
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Hi Tom, how did you determine that your engine mounts had reached the end of their lives and should be replaced?

Thanks, Andrew
 
ennio said:
Hi Tom, how did you determine that your engine mounts had reached the end of their lives and should be replaced?
Click to expand...

Hi Andrew,

When I replaced my engine mounts (which was some time ago now), I was chasing a metallic knocking upon accelerating and engine braking. The problem turned out to be related to the differential, but I don't regret changing my engine mounts at all. The engine now feels much more planted, particularly when I'm pulling away in first gear. There's much less potential for juddering and the clutch is easier to control.

Cheers,

Tom
 
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Having also fitted a new 'Dog Bone' I agree with Timmus regarding the above post. It has transformed my 2001 A2 1.4 TDi which had a bucking action both on power take up but particularly on decceleration. It had a pronounced 'knocking' with passers by turning to look. It is now a different car.

As I have the original Dog Bone with its failed rubber mount at the subframe end it should be able to be rebuilt when a suitable replacement mounting becomes available.. I spoke to Powerflex last week to ask if they have a mount and understand that they are currently looking at making one available and to watch their website. All enquiries to them about the A2 torque tube (dogbone) can only help to bring forward this availability and possibly sooner. Either a separate mount to install DIY or available on exchange. The small bush on mine remains intact after 12 years and over 120K miles. My transmission remains worn but is now a lesser issue.
 
Thanks for the replies chaps.

I had read Tom's comment about the mounts reaching the end of their life as a piece of preventive maintenance rather than as a response to fix an issue.

My engine mount rubber has recently disintegrated so my car ('54 plate TDI 90, just over 100k miles) is in the garage waiting for a replacement unit, unfortunately Audi say these are on back order so it may be off the road for a while (three weeks already). i think we are looking at doing the torque bar also whilst it is off the road. The garage will do the cambelt and water pump at the same time as these are coming up to 4 years/60k since they were changed.

Cheers, Andrew
 
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Replacing the torque arm at the same time definitely makes sense. Also, the upper engine mount has to be removed to change the cambelt, so this is another wise move.

Hopefully you'll be pleased with the results.

Tom
 
timmus said:
It seems the off-side, upper engine mount for the TDI came in two designs:
8Z0 199 212 C (with protective cap) - for the AMF engine
8Z0 199 212 J (without protective cap) - for the ATL and BHC engines

I understand that the mount was redesigned due to the MAF sensor housing rattling against the protective cap.
I have the AMF engine and my current mount has the bulky cap on top. Should I replace it like-for-like, or is the redesign a generally superior item?
Does anyone know are the two mounts totally interchangeable?

Thanks folks!

Tom
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Hi all, I've had a quite violent shaking coming from the engine/box on my car since I bought it two years ago, as well as an annoying 'brrrrr' type noise coming from the engine compartment at around 1200-1500 revs in every gear. I finally found the cause of this noise- it was the MAF sensor jarring on the offside engine mount. A rag stuffed in between the two has temporarily cured it.

Anyway, as it now appears that the shaking is being caused by a worn Dog Bone mount underneath the box, I've ordered a replacement. The Polo 9N flavour version is exactly the same apart from the bracket at the end, and at £26 delivered from the GSFcarparts shop on ebay, is much cheaper than the Audi version. I just need to re-use the Audi end bracket when changing it over.

I am thinking about changing the other two mounts at the same time as they've done 187k, and the bush in the nearside gearbox mount in particular moves all over the place when the engine is revved. The offside main mount looks ok, doesn't move much when the engine is revved and doesn't show any signs of the rubber perishing that some on here have reported. My dilemma is do I go with the original one as listed above by timmus, and risk the 'brrrrr' noise returning, or do I go with the later type that is cheaper? My worry is that there were some questions about whether the later one would fit straight in? There was an additional bracket at an extra £70 that was mentioned as being required?

Anyone got any idea whether I can use the later, cheaper mount without buying extra bits? If it's not perished, is it even worth doing? If not, I could try to get away with the nearside one and the one underneath to begin with. Any thoughts welcome :)
 
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As far as I was aware, the later type is more expensive, even before you've bought the alternate bracket... though my memory could be wrong.

I'd go with the same one you've already got and simply slip a piece of rubbery/foamy stuff between the top of the mount and the MAF.

Cheers,

Tom
 
Ok, thanks Tom, The new Polo Dogmount arm arrived today. I'll fit that first and see how much it improves things. If it's still not 100% I'll get new gearbox and engine mounts...
 
Can I get the part numbers for these engine mounts please, I think I'll start with replacing the dog bone first. To fit a 54 reg 1.4 TDI SPORT

Cheers
 
Well, the new Polo Dogmount arm arrived and was fitted on Thursday last. An improvement, the car feels more 'planted' on the road, but I still have a slight shaking when putting the car under load on the motorway e.g. going uphill. It's not as bad as before so I think I'm getting there. Next up is to replace the nearside gearbox mount as it shakes pretty badly particularly on start up or shut down. Finding an accurate part number is proving difficult however.

I also still have a definite 'clonk' noise when changing up or down between 1st and 2nd and between 3rd and 2nd. Anyone got any idea's what this might be? Thanks....
 
Pompeydave said:
I also still have a definite 'clonk' noise when changing up or down between 1st and 2nd and between 3rd and 2nd. Anyone got any idea's what this might be? Thanks....
Click to expand...

Does the clonk happen when you lift the clutch, or when you move the gear stick...?
 
The clonk occurs when I move the gearstick. When the clutch pedal is dipped or raised there's no noise at all...
 
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