How much play is too much on top engine mount for a 2.5T?

joelq · Post by **joelq** » 16 Mar 2013, 14:13

Hi all -

I'm trying to troubleshoot various noises on my 2004 XC90 2.5T that I'm suspecting is coming from the engine shifting too much within its engine mounts from torque. I don't have a way to get underneath to check the bottom mounts yet, but I figured I'd check the top mount. Visually, I can't find anything wrong with it without taking it apart.

I was surprised at how much movement the engine made when rev-ing, but I don't really have a concept of what's too much, so I took the video below. Is this too much play?

Thanks!

Post by **precopster** » 16 Mar 2013, 16:34

Hell yeah. That's a lot of movement. You could possibly have two or more broken mounts there.

There is a small torque control mount going to the gearbox from the front crossmember (bottom photo)

Also a large round hydraulic mount very close to it. There are 2 of these more or less opposite each other. The other one is on the exhaust side

Also at the timing end of the engine you have a unique and rather large mount (first pic)

joelq · Post by **joelq** » 16 Mar 2013, 20:39

Thanks, for the quick reply. Yes, I suspect I have multiple mounts that are bad, and I'm trying to figure out which ones I can do myself. From my research, the top and front ones look very doable. I'm concerned about the rear one as that sounds like a bear to replace.

Post by **precopster** » 17 Mar 2013, 07:33

You will need to have someone rev the engine while you poke around under it to see what's loose. That front hydraulic mount would be the first one to view. The nuts are 15mm from memory. If you remove the 2 bolts on the front torque mount at the crossmember and also those at the timing end as well as removing the crossbrace across the strut towers you can try to then jack the engine up at the sump by using a pine brace to spread the load.

The most fiddly one is the rear hydraulic mount to fit but it may be ok.

Post by **xHeart** » 17 Mar 2013, 08:05

precopster wrote:...
The most fiddly one is the rear hydraulic mount to fit but it may be ok.

Is this the one where steering rack bolts on, near the fluid lines?
If so, would replacing it takes lowering the subframe?

Post by **regent** » 17 Mar 2013, 08:41

If the hydraulic mounts have no visible leaks they would most likely be fine. It is the top engine mount, the transmission mount, and the lower front engine mount (at the belt side) that fail first usually.