exhaust rattle at start up
04-30-2007, 01:20 PM
#1
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exhaust rattle at start up About a week ago I started noticing what sounds like an exhaust rattle when i first start my car cold. It goes away as the car warms up for about 5min. Any ideas what it could be? Im thinking maybe a heat shield? I still have to climb under the car and take a look.
05-01-2007, 03:57 PM
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My O2 Camaro Started Doing That And Got Worse. So Bad That I Found Out It Was The Right Cat Coming Apart. So If It Keeps Getting Worse,and If It Is The Cat....gm Will Replace It Free Under A New 10yr/120kmile Warranty. They Replaced Mine.
05-06-2007, 08:34 PM
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Check your rear exhaust hanger bracket. the steel piece right by your muffler case might be broken. Mine did that a while back and that was the cause. Rewelded it and it's all good now.
05-08-2007, 08:46 PM
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Yeah mine was hitting the back bumper too, i lowered the exhast hanger and fixed that. but theirs still a slight rattle that I randmley get from the rear, must be a heat shield.
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05-15-2007, 09:30 AM
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Had the same problem.
After tapping out my exhaust with a dead blow hammer I found out that it was the heat shield by the brake lines just behind the front drivers side wheel. I had to cut this when installing my SLP SFCs and it was the piece closest to the front wheelwell.
After tapping out my exhaust with a dead blow hammer I found out that it was the heat shield by the brake lines just behind the front drivers side wheel. I had to cut this when installing my SLP SFCs and it was the piece closest to the front wheelwell.
05-15-2007, 05:01 PM
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I had just fixed mine by tighting a bolt behind the passanger side tire. I slid under the car and moved the exhaust and saw where is was coming from. It took 5 mins.
05-16-2007, 10:21 PM
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Well I got the car back today with the new cat on it. It turned out to be a bad cat and was all fixed under warranty. I cant believe the difference. With the old cat I felt like I had no power at low end. Now it feels like a whole new car I had no idea a bad cat could rob that much power from me.
