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Catalytic Converters get very hot, so there is a thin, sheet-metal heat-shield welded to the outside of the CC's housing to reduce chance of starting fires and transfering heat through the floor-board. The constant heating and cooling, expanding and contracting of the CC's housing causes fatigue at the welds and sometimes one will break. Engine and exhaust vibration cause the now unsupported corner of the heat shield to vibrate against the CC, causing a buzz, rattle, or hum.
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∙ 12y ago
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What could cause a catalytic converter to rattle.?
Catalytic converters do not rattle. If it does it will need to be replaced as it may block the exhaust. Loose heat shield?
Why does your truck's catalytic converter rattle?
Becuase there is trash in it, or your exhaust is loose.
Why does a catalytic converter rattle?
Normally the heat shield on top of the converter is the source of the rattle. It is possible the the converter medium itself has broken into pieces resulting in a rattle that sounds as if there are rocks in the converter. If the heat shield and the rest of your exhaust seems secure, it is likely the converter needs to be replaced.
Why does your 2000 GMC sierra engine rattle?
Check heat shield on catalytic converter
What does a bad catalytic converter sound like?
It may not make any sound at all. It may also rattle or you may hear a blowing sound when you accelerate. Symptoms of a bad converter are loss of power, poor fuel mileage, stalling, hard to start, and a bad smell.
What is the rattle noise coming from catalytic converter?
the substrate inside is breaking up,your cat-con is shot!!
1998 jimmy will run and go but after running for a while it won't accelerate?
It might be your catalytic converter.
My 95 ford explorer is a nice truck but when I go upto 3roms my engine or whatever starts to rattle and I dont know what it is is that something I should be concerned about?
Maybe the heat shield on catalyytic converter Maybe the heat shield on catalytic converter Maybe the heat shield on catalytic converter Maybe the heat shield on catalytic converter
Is it common for a catalytic converter to make a clicking sound?
Sometimes the heat shields around the outside of the converter break loose or rust out and causes a rattle noise.
Dodge ram starts fine but won't accelerate past 2000rpms?
Check that your Catalytic converter is not blocking the airflow.
What could be loose bad or going bad in my car that makes a rattle sound?
There could be hundreds of different things that could rattle. Give us more details. A common rattle is from the catalytic converter. The inside breaks and pieces get into the exhaust and rattle.
Do catalytic converters rattle when going bad?
Yes, that is a sign of a bad converter. Just make sure it is the converter that is rattling and not the heat shield located above the converter which are notorious for rattling on older vehicles.
