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It is probably the heat shield that is between the converter and the bottom of the car. It does what the name. They can be a pain to fix properly. I have always tried fixing mine but the "rattling" noise would always return sooner or later. I ended up taking mine off. Plus these heat shields get old and tend to vibrate relentlessly. Best best is to have someone you know take a look and see what they can do.

Yes it is, and it can cost anywere from $80.00 to $200.00 to fix.

It is also possible that the ceramic compount "honeycomb" in the catalytic converter is breaking apart and/or broke loose inside the converter. If this is the case, you *might* fail emissions but it shouldn't hurt anything (other than failing emissions).

http://www.autozone.com/servlet/UiBroker?UseCase=S001&UserAction=viewSimpleDiagInfo&Parameters=info

just buy a clamp for your heatsheild.. its the cheapest and easiest fix.

I fixed my heatshield with a screw gun and some self tapping screws . The shield is spotwelded in place. Find the areas that have came loose and screw, I used 3/8 inch panheads that where galvinized, they hold up to the heat very well and I hav'nt had anymore problems. I did this 2yrs ago and have had no problems.

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Yes if it is totally clogged.

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Convert unburnt fuel, carbon monoxide, and nitrogen oxides into nitrogen, water, and carbon dioxide.

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Ford says to flush the transmission through completely with Mercon V fluid. In other words, replace every drop of Mercon III fluid tha it came with, for Mercon V. You cannot get away with just dropping the pan and doing a service. That only removes about 6 quarts of fluid. That transmission holds about 15 quarts, so you have to use a flush machine to run it through. After you exchange all the fuid out for Mercon V, then it will take about 500 miles for the shudder to improve. And then Ford charges you $350 for a fluid change that doesn't help and just might destroy the tranny in a car that age. Ford has a bulletin on this, your torque converter is going out and it will only get worse. Just add some GM 'Limited Slip Additive' to your tranny, will work wonders. There are some transmission specific additives out there too, just haven't tried them myself. -motoman22

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the inside of your car will smell like exhaust if you have C.F (cabin filter) in you car and it has not been changed recently This may sound dumb, but some people may miss it. If you have a car in front of you that smells bad, or are in a smelly environment, and you don't have the recycle air button on, "fresh air" will enter the car.

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Yes, as long as you install a new one. It is illegal to remove the converter from any vehicle.

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Check this site out! They have a book that tells your how to buy Scrap Catalytic Converter! The book even has a list of buyer in all 50 states and over 350 pictures with detailed descriptions and a lot more. Click the link.

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No

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Yes

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This was exactly what was happenning to my 1989 Ford Bronco 351W engine. After it warmed up, it worked OK. It turned out to be a stuck/rusty EGR valve. I had replaced a few inexpensive parts until I realized what it was. I simply removed it from the block and sprayed the inside with wd40 and attempted to carefully work it back and forth. This fixed it up and its been working fine for a year now. In an extreme case, you might have to get a new one.

You can buy a spray from any local department store that has an autmotive section. The spray is for wet spark plugs and when you dowse them and your distributor cap it clears the water off.

If you try this and the car fires up on those wet days and eminates your problem then you know it results from damp spark plugs and distributor.

If you have never replaced a new set with wires and cap - do it and reap the rewards.

Likely a spark problem. Might be a cracked distributor cap, or faulty wires. Moisture makes insulators more conductive, and reduces the spark that can be generated, therefore no spark in the cylinder

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Yes, and it will cause loss of power.

Better replace the defective parts immediately before you burn your valves and ruin the engine.

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Carbon is an element, so it is not created or destroyed. No carbon enters or leaves earth. Therefore, the amount of carbon on earth never changes. It exists in several forms: * carbon dioxide, a greenhouse gas * inside living things - people, animals, trees, plankton, etc. * buried underground (in land or sea) in the form of fossil fuels (coal, oil and natural gas) When we burn fossil fuels, the carbon in them is turned to carbon dioxide and released into the air, where it causes global warming. However, life is largely made of carbon; anything alive has got carbon from somewhere. Plants take carbon dioxide from the air and turn it into the organic chemicals they need to survive and grow (we say they "fix carbon"). In this way carbon is moved from the air to a "carbon sink", which is a good thing. Suppose I cause one kilogram of carbon to be released into the air (say, by driving to work every day). Now suppose I plant a tree which will eventually grow so big that it contains one kilogram of carbon. Then the tree would have absorbed the carbon from the air, and my overall contribution to global warming would be zero.

But instead of planting trees in my own back garden, I can pay a company to plant trees. These companies allegedly plant lots of trees, and for every kilogram of carbon they offset they issue a certificate. I can buy one of these certificates, which effectively means I'm planting trees (by paying the company that plants them).

(There's another idea, known as "Carbon Capture and Storage". This hasn't (yet) been made to work. The idea is to freeze carbon dioxide and store it at the bottom of the sea, or pump it deep below the ground where it won't leak out.)

There are objections to carbon offsetting. In my opinion, fossil fuels are a much better carbon sink than trees, because they are out of the way. Trees, on the other hand, can be cut down to make way for farmland or towns. We can take land from farms and plant it with trees, but since the demand for food is the same it just means someone else will start a farm somewhere else, probably cutting down more trees to do so. So carbon offsetting doesn't work very well. Also, the trees planted are usually fast-growing trees like pine trees. So you get forests which are monocultures - in other words, there is only one type of tree, and relatively few other forms of life. Meanwhile, the trees that are cut down to make way for farmland (for instance) are often old, natural, tropical rainforests with many different kinds of plants and animals. And even with pine trees, it will be many years before the trees grow big enough to absorb the carbon they promised. This means there is more global warming in the short term. Additionally, there are many companies in the business of selling carbon offset shares. Some of these companies have a loophole that lets them buy already established trees and sell shares of those trees instead of newly planted ones. This is the fallacy of carbon offset, in that there is no net decrease in carbon emissions by new photosynthetic plant-life. Carbon offsets are analogous to the indulgences sold by the Catholic church in the 15th century. It allows rich people to pay for their "sins" rather than actually changing their lifestyle. Recently, celebrities have gotten on the bandwagon of carbon offset, including big-name music groups. The public relations boost comes from the implied idea that since the band is paying for trees to be "planted" to cover their tour carbon-costs, they are being environmentally proactive. In addition, when you book a plane ticket, many airlines have an option to offset your own personal carbon usage during the flight, for a small fee. The idea being that the average consumer can now pay a little towards their carbon "sins" and feel better about using the same level of carbon-based energy. For example, Al Gore's mansion in Tennessee uses 20 times more electricity than an average person's home (without even considering his other house or place in Washington DC). Instead of actually practicing what he preaches and reducing his electricity usage, he just buys carbon credits (or offsets) so he doesn't have to feel guilty about his extravagant, carbon-heavy lifestyle. (Not to mention that he buys the carbon credits from a company he founded and owns. In other words, he's paying himself.)

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Combustion engines produce, in their exhaust, a number of nasty chemicals. The purpose of a catalytic converter fitted to the engine's exhaust system is to convert these nasty chemicals into harmless ones to provent environmental pollution.

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Reduces the toxicity of internal combustion engine exhaust. It uses a catalyst and a chemical reaction to convert toxic combustion by products into a less toxic substance.

A catalytic converter takes the exhaust gas stream from the engine and breaks the noxious components of the exhaust down to less noxious or harmless components.

To reduce auto emissions.

The catalyst in a catalytic converter causes unburned hydrocarbons to oxidize. To do so, oxygen must be present in the exhaust mixture. If an engine is running well, there isn't really much for the catalytic converter to do. If the engine is in need of a tune-up, the catalytic converter may get quite a workout and in the process it can get very hot. Also, deposits can build up on a catalytic converter, making it useless. If the engine is running poorly, and a lot of unburned fuel is going out the exhaust, deposits from the fuel can build up on the catalyst. If the engine is burning oil, oil deposits can also build up.

It converts carbon monoxide, which is very deadly to all animals into carbon dioxide, which is not near as bad for the environment and it also helps prevent greenhouse gases because of this.

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Short answer: YES!

Longer answer: The EGR valve is designed to recirculate some exhaust gas into the intake, in order to cool combustion temperatures somewhat. If the combustion temps exceed 1100 degrees (actually common in gasoline engines) then oxides of nitrogen are produced. these gases are what we see as visible smog. If the EGR valve fails, it can lead to very high exhaust temps which can gradually melt the insides of the catalytic converter. If a failed EGR is combined with a lean fuel mixture, or over-advanced ignition timing, the melting of the converter happens very quickly.

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No

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A tachometer works by measuring how many time a spark plug fires. If the tachometer is designed to determine the rpm of an 8 cylinder engine it will not show the correct speed of a 2 cylinder engine. If I remember correctly if the tachometer designed for an 8 cylinder is used on a 4 cylinder engine it will show twice the number of actual rpm. So an 8 cylinder tachometer used on a 2 cylinder engine will show 4 times the actual rpm of the 2 cylinder engine. If you check around there are special tachometers designed for 2 cylinder engines.

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the substrate inside is breaking up,your cat-con is shot!!

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It does not remove carbon monoxide.

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I would suspect a bad needle valve and seat in the carburetor. The float level can also be set too high. I would replace the needle valve and seat and check float level.

I would suspect a bad needle valve and seat in the carburetor. The float level can also be set too high. I would replace the needle valve and seat and check float level.

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2000 HONDA ODYSSEY CODE PO420.WHAT NEED TO BE REPLACE? ANSWER XXXXXXXXXXXXXX Code PO420 is catalytic converter efficiency low bank 1, sensor1. You did not state as to the year,make and model of the car as well as the engine size. I am a member of IATN and the majority of there fixes was related to someone installing an AFTER MARKET converter. There is a big difference. I strongly suggest that you go to a repair shop with the proper equipment as well as a very good tech to diagnosis the problem. You could replace parts and never fix the problem.jd1709

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Yes, it is possible. It will also cause severe loss of power.

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You might have a faulty oxygen sensor. Typically, when cold, the engine management system operates in "open loop" mode ignoring feedback from oxygen sensors because they don't work properly until they heat up to a specific temperature range. Once the sensors heat up, the computer goes into "closed loop" mode using the signal from the oxygen sensors to help adjust the air/fuel mixture. If one or more sensors are faulty, the fuel mixture may be incorrect and cause a poor running condition.

Another possibility is that you have a running problem which is noticeable when the engine is turning slowly. Air metering, EGR system, and mechanical engine problems are your most likely suspects here. When the engine is cold, the computer raises the idle speed of the engine to warm it up faster and to prevent stalling which masks the problem until warmup occurs.

== == -you might also have a bad distributer or a bad catalytic converter or muffler