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What's this Rattle ?

Posted: Sun May 06, 2018 12:27 pm
by rob381
hi guys, i have an 04 plate 2.0ltr GV with 110k on the clock. Recently there has been an annoying rattle coming from underneath the front of the car. It sounds like a heat shield that has come loose and it vibrating on the exhaust. It's really noticeable upon start up and if in a low gear, trying to pull away fast it's noticeable then. I have been under the car and can't find anything loose that could be the culprit. The exhaust manifold is tight and so is the heat shield on the cat.
I had a thought that could this be a timing chain and tensioner issue ? The oil and filter have been changed every 5000mile.
Any help on this issue would be much appreciated.
Regards.

Re: What's this Rattle ?

Posted: Mon May 07, 2018 9:14 pm
by donkeychomp
Have you checked the bolts that connect the manifold to the exhaust?

Re: What's this Rattle ?

Posted: Mon May 07, 2018 9:44 pm
by rob381
Hi, thanks for the reply, yeah I took off the heat shield on the exhaust manifold and checked them, all tight.

Re: What's this Rattle ?

Posted: Tue May 08, 2018 11:05 pm
by ScottieJ
If it was timing chain/tensioner rattle you would be able to hear it coming from the front of the engine while stationary, espiecially from cold. It doesn’t really sound like a heat shield rattling at all, that issue is more of a ticking, slapping sort of rattle and you would instantly be able to trace it to the front of the engine.

To me your issue sounds like something else underneath, if it will do it while stationary at certain Revs get someone (you trust not to run you over) to hold it at those revs and then get underneath to listen and trace it.

Re: What's this Rattle ?

Posted: Wed May 09, 2018 10:22 am
by zook123
Have you got a tow bar fitted?

Re: What's this Rattle ?

Posted: Wed May 09, 2018 6:42 pm
by rob381
Thanks for the replies guys,in reply to zook 123, yeah I have a removable to bar.
Cheers guys.

Re: What's this Rattle ?

Posted: Fri May 11, 2018 10:11 pm
by zook123
My exhaust rattled on the tow bar, i used some stainless scouring pads between the exhaust and towbar. Might be worth checking that!

Re: What's this Rattle ?

Posted: Sun May 13, 2018 5:16 pm
by ROBBIE
zook123 wrote:
Fri May 11, 2018 10:11 pm
My exhaust rattled on the tow bar, i used some stainless scouring pads between the exhaust and towbar. Might be worth checking that!
Side of the back box onto tow bar arm to chassis? Sounds familiar

Re: What's this Rattle ?

Posted: Wed May 16, 2018 7:23 pm
by rob381
Thanks for the replies fellas, I have had the rear silencer replaced and guess what ? No more rattling. Would you believe it. Thanks again for the suggestions on this annoying matter.
Regards.

Re: What's this Rattle ?

Posted: Tue May 22, 2018 3:37 pm
by zook123
Excellent, i'm just waiting to get mine replaced with some standard piping, that should stop the rattle!