Engine Rocking back and forth with ease

[matttdi]

Hello,
So I drove my car (2004 Jetta TDI 5 speed) home, ate some dinner, and drove back into town and immediately noticed multiple things wrong with the car. First was the noise, almost like a grinding or rubbing of some sort, and then I noticed the feeling of the motor mounts extremely loose. When at a stop I can have the clutch all the way in, give it a blip on the throttle, and the car will try to slightly lurch forward. I got out and took a look but I have never seen something like this. I can move the motor on the axis of the axles with a rotation of at least 6 inches back and forth front to back in the car. The grinding sound I'm assuming is something getting bound or rubbing when it rotates back. (I took a video if anyone is interested I can email it for further advice.) Is it possible I lost all motor mounts at once? I'm pretty new to TDI's but not new to working on cars so any advice would be appreciated. I have not got the chance to get under the car to see what I can find, but any advice on things to look for other than motor mounts?

 

[matttdi]

I'm 50/50 on if its just motor mounts but I wasnt sure If this much movement so suddenly could be from just the motor mounts or if this could be from something more.

 

[Nero Morg]

Sounds like your dogbone mount let loose. Maybe an inch of rotation is okay for a tired mount, but you have way too much.

 

[Metal Man]

Yes. you'll have to get under it and look at the dogbone mount.

 

[matttdi]

Sounds like your dogbone mount let loose. Maybe an inch of rotation is okay for a tired mount, but you have way too much.

Yes. you'll have to get under it and look at the dogbone mount.

Just crawled under and you guys were right, it sheered off on the back side of the dogbone closest to the trunk. Am I going to have any real trouble replacing this or should I have a shop take a look? Also I looked up at the turbo and it looks like the VNT blades are somehow outside the turbo housing, (I'm assuming this all happened at the same time) the turbo has multiple little sheets of aluminum fanning out like a fan blade with about 1/4 inch holes on each corner. Kind of hard to describe and I couldn't take a picture but maybe one of you could help diagnose it? Once again I'm pretty mechanically inclined but not with diesels

 

[matttdi]

Just crawled under and you guys were right, it sheered off on the back side of the dogbone closest to the trunk. Am I going to have any real trouble replacing this or should I have a shop take a look? Also I looked up at the turbo and it looks like the VNT blades are somehow outside the turbo housing, (I'm assuming this all happened at the same time) the turbo has multiple little sheets of aluminum fanning out like a fan blade with about 1/4 inch holes on each corner. Kind of hard to describe and I couldn't take a picture but maybe one of you could help diagnose it? Once again I'm pretty mechanically inclined but not with diesels

adding to this I have no smoke or anything but obviously I haven't tried to make boost since the dogbone broke

 

[Nero Morg]

Umm...
got a photo of the carnage? As for the dogbone, it's something that you could easily replace. The turbo... I'm curious what exactly is going on there.

 

[Mozambiquer]

Just crawled under and you guys were right, it sheered off on the back side of the dogbone closest to the trunk. Am I going to have any real trouble replacing this or should I have a shop take a look? Also I looked up at the turbo and it looks like the VNT blades are somehow outside the turbo housing, (I'm assuming this all happened at the same time) the turbo has multiple little sheets of aluminum fanning out like a fan blade with about 1/4 inch holes on each corner. Kind of hard to describe and I couldn't take a picture but maybe one of you could help diagnose it? Once again I'm pretty mechanically inclined but not with diesels

Sounds like the turbo split in half. I've seen that happen before...

 

[Rob Mayercik]

Give all the dogbone's mounting holes on the engine/chassis a good going over too - if there's a chance the engine was rocking much before the dogbone let go, it could have egged out the holes the mount bolts too (had that happen to me a year or two back due to a broken exhaust flex joint)