rattling on deceleration only
Thread Starter
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1st Gear
Joined: Nov 2008
Posts: 12
rattling on deceleration only
OK so I got a metallic rattling that happens only when the engine is decelerating. it happens when im moving, when im stopped, no matter if the clutch is engaged or disengaged. the sound is louder when downshifting. The sound seems to be coming from the front driver's side. Also, the rattling is more apparent in the car. Ive been under the car to look for the colprate but have come up empty handed. its driving me insane!! Any ideas??
3rd Gear
Joined: Oct 2007
Posts: 2,158
From: CT
some rattling is normal, especialy when you make the engine dip below idle. you can replace your motor and transmission mounts, that will help a little bit but theres always a little vibration. if its really like metal on metal banging, it could be your cat on its way out, or just something rattleing on something else, like a heatshield on your exhaust or driveshaft.
Thread Starter
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1st Gear
Joined: Nov 2008
Posts: 12
the rattling is getting worse. ive been trying to find it on my own which is hard because you have to rev the motor and let it decelerate to hear it. it happens mostly from 3-2k rpm. its louder in the car too. in my garage, if i rev it with the window down I cant hear anything outside the car. I dont think its the heat shield, it seems to me its coming from the driver side of the engine so i dont think its the cat either. the ratteling will decelerate with the motor and get louder if you brake hard. it sounds almost like gear teeth on a housing...
Tech Slut
Joined: Jan 2006
Posts: 3,150
From: Jersey Shore
I agree with the possibilty of the cam chain tensioner though.
3rd Gear
Joined: May 2008
Posts: 1,900
From: CT
Last edited by Tweaked; Jan 16, 2009 at 07:17 PM.