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Hi There,


My 2015 evo x started rattling under the car about 2 - 3 months ago. (rattling occurs around underneath the back passengers seat)


I ignored it at first but now the rattle has became louder.


I have no idea what is going on and Mitsubishi said they will charge me to investigate this. ( i have serviced it every time at Mitsubishi dealer ship. Car has 40,000km on it at the moment)


I have heard other people say it could be the heat shield for the exhaust.



I have changed my catback exhaust however i dont believe this is the cause as i have changed it years ago and the rattle has only started now.


Rattle Noise
- Will rattle when you accelerate (around 50% of the time)

- Will rattle when clutch is engage and disengaged
- Rattles about 70 - 80% of the drive
- Will not rattle when car is stationery


I have attached a mp3 recording of this.


Any help is much appreciated.


Thanks
 

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I had a similar noise recently. My downpipe heat shield was a bit rusty and coming apart, and it was rubbing on the downpipe
 

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I have the same issue, this first occurred when I got a straight test pipe mated to my q300 exhaust. It started rubbing against the exhaust heat shield. Changed to a test pipe with a bend and problem resolved that was about 2 years ago.

Then randomly started again last month Feb 2019, jacked the car up and pushed the exhaust away from the heatshield, stopped for about a week then started again. I'm thinking its just some bad exhaust hangars.

Also have a rattle from the engine bay but that's from a missing bolt on the turbo heat shield.
I would say if you have a jack just lift the car up and check if the exhaust its rubbing or near the heat shield.
 

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Check your exhaust hangers. I had one break a few months back. It’ll cause some rattles.
 
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