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A heat shield is used to keep high exhaust system operating temperatures from radiating to the floor of the passenger compartment or other vehicle parts that should not be exposed to the high heat. If it is mounted above the catalytic converter it becomes the catalytic converter heat shield. There can be other heat shields through-out the exhaust system not just the converter. The converter or converters, (some vehicles are equipped with more than one) are the hottest part of the exhaust system. Generally heat shields are made of stamped aluminized steel. They are light weight and effective in shielding various parts or areas of the vehicle from the high exhaust operating temperatures. They are also prone to corrosion after a long period of service, they can rattle and make noise once they become rusted from their mounting areas. They should under no circumstances be discarded once deemed broken. Instead heat shields should be replaced as they are needed for above mentioned reasons.

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Q: What is a catalytic converter heat shield?
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Related questions

What is heat shield on catalytic converter?

A heat shield deflects the heat given off the catalytic converter from over heating surrounding parts or panels.


What is the catalytic converter protector?

Heat shield.


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?

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What part of a catalytic converter is the heat shield?

I do not believe that catalytic converters (as used in exhaust systems) have a heat shield. They are simply porous blocks through which the exhaust gasses flow.


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Yes, it can and this may also be a loose or cracked converter heat shield.


Is it safe to drive without a cover for a catalytic converter?

No,, the converter gets very hot and can cause a fire if no heat shield is in place.


What causes rattling noise when accelerating?

Heat shield on catalytic converter? Octane rating of fuel not high enough Timing too far advanced Catalytic converter itself


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.


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How to stop the Rattling noise from a catalytic converter?

The heat shield on top of the converter may have broken loose. it can be repaired. If the rattling is inside the converter it must be replaced.