Dragonfly17 Posted February 26, 2016 Share Posted February 26, 2016 Hello guys , I noticed today as I put car in garage that I had a slight rattle sound from under the bonnet did sound like it was more passenger side / centre of the car it did not rattle every time I revved the engine but did make the sound 2-3 times. The car had been on a long motorway journey so was nice and warm , I have noticed rattle is more noticeable when cold too Quote Link to comment Share on other sites More sharing options...
simpo Posted February 26, 2016 Share Posted February 26, 2016 Most likely a heat shield cat is a common one 2 Quote Link to comment Share on other sites More sharing options...
Dragonfly17 Posted February 26, 2016 Author Share Posted February 26, 2016 Most likely a heat shield cat is a common one Cheers for info , could it be injector noise or to do with cambelt or tensioner? Quote Link to comment Share on other sites More sharing options...
Jayhoath83 Posted February 26, 2016 Share Posted February 26, 2016 Likley culprit is the heat shields check them first as tgey are a cheap item 1 Quote Link to comment Share on other sites More sharing options...
simpo Posted February 27, 2016 Share Posted February 27, 2016 Possible I suppose I have also had pulleys come loose so might be worth checking them Quote Link to comment Share on other sites More sharing options...
EdGasket Posted February 27, 2016 Share Posted February 27, 2016 I got the same on my MB2, seems to be internal to the cat as all the heatshields are secure including the one round the cat. Mine is also throwing a P0420 showing cat efficiency down. 1 Quote Link to comment Share on other sites More sharing options...
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