Question about 2001 Hyundai Santa Fe

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Rattles from the heat shields on the catalytic converter

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Ok Mr. Santa Fe first things first: you have two options: rattles from the heat shields: you mast take a look at the exhaust system and make sure if the rattles come from shields or the converter. by the way they are both repairable if you know the right tricks. if from the shields and or their mounts you have to make sure the shields or their mounts are solid and healthy, and not rusted to sh#%$i%ts
you have find a way to see in what condition they are in. if you are able to jack up the car and look ok. if not you got to go to a shop ant lift it up on a hoist. some exhaust shops can weld the brackets or the shields all depends how they are mounted. others will try to sell you anything they can. if you know a little bit about metals you can decide like I shed they are repairable. The second option is if the rattles come from the converter, and this is a tricky one, and, believe me every body hear will try to sell you anew one.
again all depends on the situation, take two sheet metal screws 1.1/2" to 1,3/4" and drive them in the catalytic the idea is to jam the loose part inside I did that on seven units so far they all still going quietly with no problems just remember you have to find some one
who knows what he is doing and is willing to help you.
good luck.
Christopher. From Toronto.

Posted on May 14, 2014

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Probably a bunch of gravel up in there. Exhaust pipe is loose as well expect it to fail soon.

Posted on Apr 15, 2014

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1 Answer

The cat converter has started making a vibrating noise do i hsve to replace


A vibrating or rattling sound coming from around the area of your catalytic converter is much more likely to be a problem with the heat shield that wraps around the top of the converter to keep it from damaging the floor of your car. A noisy, rattling heat shield is annoying, but it can be ignored without damaging the car.

A catalytic converter that is failing is likely to make a "whooshing" sound like a muffler with a hole in it. Or, if your cat suddenly plugs up because the inside has come loose, your car will suddenly have no power and you'll have exhaust gas trying to escape from every gasket in the exhaust system. It's a very distinctive (and expensive) sound, compared to a loose heat shield.

Some people simply remove their noisy heat shields. Others pay a welder a few dollars to tack it back into place. It's a simple problem to diagnose, especially if you can put the car on a lift and get underneath it to wiggle parts until you identify the loose section(s).

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Most likely the heat shield has corroded off and is just sitting on top of the muffler or Catalytic converter. Regardless you can remove the shield and still run the the Xterra without any problems, the OEM muffler came with a heat shield as to the after market mufflers don't have one. The Catalytic converter also has a shield and you can remove it also as the Xterra has a heat shield on the floor board it self. Most exhaust shop if honest will tell you to just remove the rattling shield if there is no exhaust leaks or no Check engine light on that monitor's the Catalytic converter's performance.
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When catalytic converters go bad, the porcelain matrix inside comes loose and is noisy.
But you can just unbolt it, break up the loose chunks, pour out the pieces, and it will run better than ever.
If you don't pass the next emissions test, then replace it.

But it could just be the heat shield rattling instead.
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Check the heat shield on the Catalytic Converter, after a few years they start to rust off and rattle. Crawl under the Pathfinder and bang along the Converter and muffler area and see where it's coming from.   Good chances are, it's from the heat shield since you already had everything changed from the Cat back.
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My subaru forester has a rattle in the catalytic converter can it be repaired


I bet its just a the heat shield on the catalytic converter. Subaru uses very thin metal and the heat shield is bolted as opposed to welded together. This rattle is extremely common on subys.

mrmopar is right that you should replace it.

however there is a quick fix that will stop the noise. Go pick up a 6" stainless steel hose clamp at the hardware store. put the hose clamp around the cat. It should be obvious whats loose when you look under the car.

if you are a little handy its not a hard job to do your self. Just 4 bolts. You can get a catalytic converter for $200 online. Get the gaskets too. shouldn't take more than an hour or two.

You will need to put the car on jack stands or rhino ramps to get access. Once you are under the car, the parts are easy to get to.

Always, always chock the tires when your under the car. You do not want a car to fall on you.


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