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Loud rattle at low revs ( in every gear )

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Twellsy
Lancer ES/EX
Lancer ES/EX
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Joined: Tue Sep 28, 2010 11:20 am
Location: Sydney , Northern Beaches

Loud rattle at low revs ( in every gear )

Postby Twellsy » Thu Apr 02, 2015 12:33 pm

Hi Guys/Gals

I have a quick question about a really loud rattle I get at low revs, it happens in all gears. almost sounds like the exhaust is rattling on the body ( I have checked this it doesn't appear to be )
Has anyone else had this problem or something similar ?
Just wanted to get opinions and thoughts before I take it in to be looked at.
The car is a NA 2010 lancer sx ( only mods air filter and RA intake, 2 years ago )

Cheers Twellsy
ID: 2281

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the sam
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Joined: Wed Dec 18, 2013 7:35 pm
Location: Sydney, Australia

Postby the sam » Thu Apr 02, 2015 12:41 pm

Manual? Or auto?
230kw/430nm @ 24psi on E85
12.191 @ 108.81mph - Fastest stock turbo ralliart in Australia
www.facebook.com/BoostinJuiceTuningSydney
www.clubcj.net/viewtopic.php?p=369141#369141

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Twellsy
Lancer ES/EX
Lancer ES/EX
Posts: 166
Joined: Tue Sep 28, 2010 11:20 am
Location: Sydney , Northern Beaches

Postby Twellsy » Thu Apr 02, 2015 2:21 pm

It's a manual
It only seems to happen when the revs are on 2500. You can hear the rattle as you go past 2500 or if the revs sit on 2500 its a consistent rattle.
ID: 2281

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the sam
Lancer ES/EX
Lancer ES/EX
Posts: 118
Joined: Wed Dec 18, 2013 7:35 pm
Location: Sydney, Australia

Postby the sam » Thu Apr 02, 2015 4:01 pm

Can you feel the rattle at all?

Have you had the clutch touched at all recently?

Could be a number of things:
- Flywheel rattling (unlikely)
- Engine mounts
- Exhaust heat shield

Try and get someone to help emulate the noise while you can walk around the car and check under the car to pinpoint it.
230kw/430nm @ 24psi on E85

12.191 @ 108.81mph - Fastest stock turbo ralliart in Australia

www.facebook.com/BoostinJuiceTuningSydney

www.clubcj.net/viewtopic.php?p=369141#369141

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Zaphod
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Location: Gold Coast, Qld. Australia

Postby Zaphod » Thu Apr 02, 2015 7:20 pm

As Sam suggested, check the heat shield and have a look under the car in case an exhaust hanger's given way.

Do you get a rattle at 5000rpm? - could be a harmonic...
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