Rattle behind seats

lansha · Post by **lansha** » Mon 21 Jun, 2010 18:02

My 97 Z3 has developed a compination rattle/thunk coming from behind the seats. I have checked the Sub Woofer and the enclosure serounding it but I feel its coming from some place deeper. This only happens on rough roads. Thoughts?

w4tkins · Post by **w4tkins** » Mon 21 Jun, 2010 18:05

have you checked the seat bushes or the fuel tank straps underneath the car??

lansha · Post by **lansha** » Mon 21 Jun, 2010 18:09

Seat Bushes yes. Fuel tank straps huh? Well now that you brought it up, that sounds like a great place to look. Thank You

w4tkins · Post by **w4tkins** » Mon 21 Jun, 2010 18:33

Not a problem.

I have heard of them being a problem on some zeds. There are two straps bolted to the floor and the tank rests on top see here good luck

DC · Post by DC » Mon 21 Jun, 2010 19:32

The rattle behind my seats turned out to be slightly loose ( not worn ) rear shocks top mounts, there's lots of posts about them.
Unfortunately they where the last thing I checked after fuel tank mounts, brakes etc.

w4tkins · Post by **w4tkins** » Mon 21 Jun, 2010 20:48

lansha

reading Dc's post that could also be a good possibilty. click on My Journal and there is advice on the shock top mount. very quick and easy job. Its another avenue to look down.

I also added reinforcement plates to stregthen the mounts, similar to the rouge engineering set up, 9 pounds for the aluminium plates.

lansha · Post by **lansha** » Tue 22 Jun, 2010 13:33

Found it! I followed DC's suggestion and w4tkins suggestions plus the helpful links and found a loose top shock mount. You gents are alright. Enjoy a Belhaven on me, Thank you

Rob Tan · Post by **Rob Tan** » Tue 22 Jun, 2010 20:49

And THAT'S why I love this forum. You got a question, you come here!

preston2.8 · Post by **preston2.8** » Tue 22 Jun, 2010 22:13

Hello , I also have a noise behind my seat/ boot area,, I think it's the back suspention, I am going change the springs soon for lower ones, what have I got to look out for ? (ie how can I tell if the top mounts are worn) thanks luke

Brian H · Post by **Brian H** » Wed 23 Jun, 2010 06:03

Preston2.8

Have a look here, if you look at the last pic of the OP you will see that the centre tube has detached from the rest of the mount.

HTH