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The exhaust heat shield on my mazda 2 has come loose . Is it a simple job to replace?

The fixing holes seem to have coroded which has made it drop on to the exhaust

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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redbeard00
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SOURCE: 03 Mountaineer AWD Premier V8 rattling noise under vehicle

If its the heat shield against the underside.its install with fender style aluminum rivets( if you do it be very careful not to drill into a harness) If its the heat shield around the CAT then you should replace the cat. You can try to repair it with a pair of long hose clamps but I don't advise removing it. In the wrong environment the heat could cause a grass fire. or ignite trash that may get caught or blown underneath. Good luck.

Posted on Apr 28, 2009

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  • 5 Answers

SOURCE: 2002 MAZDA PROTEGE5 2.0L (manual transmission)

had the same on my girlfriends car. there is a tiny heatshild on the topside above the catalyic converter and there is also a small one on the seperate exhaust pipe (same pipe, but bolted on the headers and to before the cat) where is bends to connect to the headers to the back of the car.

Posted on May 28, 2009

  • 153 Answers

SOURCE: underbody rattle/buzz during hard acceleration.

theres a service bulliton that replaces the piece of flex pipe on the exhaust. also i have seen rocks get in the cat converter heat shield and do the same thing

Posted on Oct 01, 2009

  • 1 Answer

SOURCE: Accelarating from 25 to 40 MPH - a "rattle" in exhaust system

Had my y-pipe replaced (bad cats) and the bolts at the y-pipe flange where it attaches to the exhaust manifolds started to get loose and I go tthe viberating (tinning) noise. Took it in the first time and they tightened everything up but it seems it's doing it again so I'm going to try to fix on my own. Just wondering how much of a pain it's going to be to get to the bolts and what size...

Posted on Dec 04, 2009

drsinister69
  • 2317 Answers

SOURCE: loose heat shield

Most likely it's a heat sheild on the converter, maybe the muffler. 1 on top and 1 on the bottom. The heat sheild is welded to the converter, over time they rust away, around the welds. You can use a large diameter worm gear clamp to keep the heat sheild from rattling. The sheilds are in place so if you drive over grass, the heat from the converter won't ignite the grass.

Posted on Mar 14, 2010

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1 Answer

2000 S500 Benz makes a loud rattling sound IE like firecrackers while idling and driving.what could it be? sound comes from left side of engine maybe


Normally tiney rattley noises are just heat shields that have come loose check under the bonnet and under the car for loose heat shields also the heat shield around the cat can corode and come lose hopevthis helps ivan

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Heat shield rattling is it ok if I just take it off with out replacing it ?


heat shield could be broken or loose missing screws to hold it in place.NO bad idea DONT remove heat shield it protects other components from heat damage.heat shields also protect vechicle floor board from getting too hot causing fire.

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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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My car has a horrible exhaust problem, makes noise. Even louder as the speed increases. Also it puts out mass heat. My trunk got so hot that the carpet inside of it started to melt. Im not sure if its...


Well it sounds like either the muffler itself has a rupture in the outer shell or the exhaust pipe going into the inlet may have a hole or a bad weld (or loose clamp if it's not welded in place) as to the heat shield you'ld just need to raise & support the vehicle and really inspect exhaust to pinpoint problem and see if the heat shield has been replaced too. I'd imagine the top of the muffler has blown out and all that heat is hitting the trunk pan and melting your carpet

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2001 oil pan removal


You need to drop the exhaust then the pan comes down. BUT if you are doing this because the exhaust shield has rubed through the paint making the pan rot out in that one spot. then once you remove the exhaust grind the pan where the hole is and wire brush an old copper penny and use ( J B weld ) epoxy http://www.jbweld.net/index.php
to stick the penny over the hole, then with a hammer tap the exhaust shield back so it doesnt touch the pan and bolt it back up.

dropping the exhaust is tricky, once you have the 4 oxyigen sensors unpluged remove the 4 exhaust manifold nuts off the studs (you might need to use a torch to heat them up) then unbolt the flex pipe and you will have 1 more bolt in the middle of the system that as you crank it out the exhaust will come down

Aug 30, 2009 | Ford Windstar Cars & Trucks

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Squealing noise while turning wheels at low speeds


The squeeling nose is a loose or worn out power steering belt have you mechanic replace and tighten the belt, most of the time the heat shield fastener or mounting hole has rusted out and no tuely effective repair can be performed

Jul 14, 2009 | 1988 Volvo 740

1 Answer

Accelarating from 25 to 40 MPH - a "rattle" in exhaust system


Had my y-pipe replaced (bad cats) and the bolts at the y-pipe flange where it attaches to the exhaust manifolds started to get loose and I go tthe viberating (tinning) noise. Took it in the first time and they tightened everything up but it seems it's doing it again so I'm going to try to fix on my own. Just wondering how much of a pain it's going to be to get to the bolts and what size...

Jun 06, 2009 | 2007 Chevrolet Silverado 1500 2WD

1 Answer

2002 MAZDA PROTEGE5 2.0L (manual transmission)


had the same on my girlfriends car. there is a tiny heatshild on the topside above the catalyic converter and there is also a small one on the seperate exhaust pipe (same pipe, but bolted on the headers and to before the cat) where is bends to connect to the headers to the back of the car.

Apr 28, 2009 | 2002 Mazda MPV

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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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1 Answer

Exhaust problems


What you are hearing is probably a heat shield on the exhaust system that is loose. It won't cause any harm to drive it like this, it's just annoying. A 'cheap fix' would be to jack the car up, support w/ safety stands, look for something loose on the exhaust system (make sure the car has cooled off, you don't want to grab a hot exhaust pipe), You can usually re-attach the loose shield with something like a wire coat hanger. It may require drilling a hole in the corner of the shield, and then securing the wire after running thru the drilled hole. If you choose to take it to a garage, have them show u what's making the noise, and suggest this fix. If they want to change major exhaust components, tell them u would like to do this, and not an expensive repair at this time. good luck countrycurt0
Another possibility is the engine 'pinging'. I'm assuming the noise is coming from under the car, engine pinging would come from the engine itself. If you believe the noise is from the exhaust, ok, if not let me know. cc

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