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Pls Help: Catalytic Converter Missing In Exhaust Pipe - Car Talk - Nairaland

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Types Of Smoke From Your Car Exhaust Pipe And What It Indicates / How Do You Know If You Have A Leaky Exhaust Pipe ? / Magnaflow Catalytic Converter (2) (3) (4)

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Pls Help: Catalytic Converter Missing In Exhaust Pipe by replete(m): 10:10am On Jun 19, 2015
During a gasket change, I noticed the catalytic converter of my toyota camry has been removed. What is the actual effect of this on fuel consumption and how effective will fixing another one be?
Gazzuzz, Sienna and every other car gurus your advice will be deeply appreciated. Thanks in anticipation.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by mayor2013: 10:27am On Jun 19, 2015
Give a better information about your car spec
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by replete(m): 11:19am On Jun 19, 2015
mayor2013:
Give a better information about your car spec

It's a 2005 model toyota camry sir
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by mayor2013: 11:34am On Jun 19, 2015
A missing catalytic converter affects fuel consumption (high). Fixing another one is good but with a tech who kniws the job well. First thing for them is to check the the state if its being shattered or removed completely. If shattered I advice you remove completely cos this can in turn block the exhaust system and cause a horible damage to the engine
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by LegatusGlaber(m): 12:20pm On Jun 19, 2015
You can fix it back if you want, but it has nothing to do with fuel consumption. Once the oxygen sensor is in order, you have nothing to worry about.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by honmusa(m): 1:39pm On Jun 19, 2015
LegatusGlaber:
You can fix it back if you want, but it has nothing to do with fuel consumption. Once the oxygen sensor is in order, you have nothing to worry about.
Hmmmmmm , grin, grin
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by replete(m): 3:56pm On Jun 19, 2015
LegatusGlaber:
You can fix it back if you want, but it has nothing to do with fuel consumption. Once the oxygen sensor is in order, you have nothing to worry about.

Are you saying I can choose not to fix it back. If the oxygen sensor works?
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by 19naia(m): 8:20pm On Jun 19, 2015
O2 sensor would already be telling you if it was not working well.. If the car is driving well and no issues or check engine light is troubling you, then it is OK.. Catalytic converter only charges the exhaust smoke to convert the toxic aspects to less toxic emmissins.. It does not affect fuel because it is installed after the fuel/air burning area..
The O2 sensor can affect how fuel is burnt if the sensor is no longer reading as usual due to the Catalytic converter removal..
The O2 sensor sends the sensor data to the car's management system and the data is used there to calibrate air and fuel intake ratios..
Catalytic converter is expensive and people like to remove them and sell them for the precious metals in there used for the catalytic process..
It only serves to meet clean air requirements by governments of USA and other countries..
Its good to have one if you can afford.. Clean air is priceless and affects a persons life and makes the difference between dying of asthma or living another day... When i ride in thick traffic in countries that dont require the CC, i get light headed and a bit ill feeling.. In the USA where CC is mandatory for all marketed cars, i dont get so affected in heavy traffic..

Drive the thing and see if you notice change in fuel guzzle.. After that, its up to you...

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Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by GAZZUZZ(m): 10:14pm On Jun 19, 2015
replete:
During a gasket change, I noticed the catalytic converter of my toyota camry has been removed. What is the actual effect of this on fuel consumption and how effective will fixing another one be?
Gazzuzz, Sienna and every other car gurus your advice will be deeply appreciated. Thanks in anticipation.

Scan vehicle.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by replete(m): 10:48pm On Jun 19, 2015
19naia:
O2 sensor would already be telling you if it was not working well.. If the car is driving well and no issues or check engine light is troubling you, then it is OK.. Catalytic converter only charges the exhaust smoke to convert the toxic aspects to less toxic emmissins.. It does not affect fuel because it is installed after the fuel/air burning area..
The O2 sensor can affect how fuel is burnt if the sensor is no longer reading as usual due to the Catalytic converter removal..
The O2 sensor sends the sensor data to the car's management system and the data is used there to calibrate air and fuel intake ratios..
Catalytic converter is expensive and people like to remove them and sell them for the precious metals in there used for the catalytic process..
It only serves to meet clean air requirements by governments of USA and other countries..
Its good to have one if you can afford.. Clean air is priceless and affects a persons life and makes the difference between dying of asthma or living another day... When i ride in thick traffic in countries that dont require the CC, i get light headed and a bit ill feeling.. In the USA where CC is mandatory for all marketed cars, i dont get so affected in heavy traffic..

Drive the thing and see if you notice change in fuel guzzle.. After that, its up to you...
Wow thanks, I think I need to relax. My mind then.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by Nobody: 4:58pm On Jun 20, 2015
Once noticed that mine was stolen from the C class Benz with a change in the sound. This was done by the panel beater though he swore that 'I didn't eat the akala' as they call the catalytic converter.
It basically reduces the amount of harmful substances emitted into the atmosphere. It costs up to 25-50k depending on the model of car.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by 19naia(m): 9:23pm On Jun 20, 2015
chibabe3:
Once noticed that mine was stolen from the C class Benz with a change in the sound. This was done by the panel beater though he swore that 'I didn't eat the akala' as they call the catalytic converter.
It basically reduces the amount of harmful substances emitted into the atmosphere. It costs up to 25-50k depending on the model of car.
You must be talking about second hand very used Akala for 50k naira.. $3500 is what? Something like 700k naira? Thats the new cost for some car's "akala" as far as i know in the US... Mercedes Benz may not be so cheap unless its a small engine with less emmissions to convert...
" Akala " grin good one though, never heard that before..
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by double0seven(m): 10:42am On Jun 21, 2015
replete:

Wow thanks, I think I need to relax. My mind then.

Don't listen to the guy 12naina; he doesn't know what's he's talking about. The absence of catalytic converter, more commonly called catalyt, affects fuel consumption badly. From personal experience, and I'm sure from many other people's experience.

I used an MPV whose cayalyt was removed; didn't even know. The car was just eating fuel anyhow until someone checked it and said the catalyt was gone.

I bought a Benz catalyt; Benz catalyt are made of metal; a panel beater help me fixed it and the excessive fuel consumption stopped.

Tell guy doesn't know what's he's talking about. He's only blowing grammar. Granted, the catalytic converter may have other job it does, but it's removal definitely leads to excessive fuel consumption.

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Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by bolaomega(m): 11:11pm On Jun 21, 2015
Please guys, How many 02 censor does a MB C Class 180 classic (w202)has?. I can see one at d engine manifold. Just to confirm. My catalytic converter has also been removed by "bad boys". How bad is this on the car?
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by 19naia(m): 12:26am On Jun 22, 2015
double0seven:


Don't listen to the guy 12naina; he doesn't know what's he's talking about. The absence of catalytic converter, more commonly called catalyt, affects fuel consumption badly. From personal experience, and I'm sure from many other people's experience.

I used an MPV whose cayalyt was removed; didn't even know. The car was just eating fuel anyhow until someone checked it and said the catalyt was gone.

I bought a Benz catalyt; Benz catalyt are made of metal; a panel beater help me fixed it and the excessive fuel consumption stopped.

Tell guy doesn't know what's he's talking about. He's only blowing grammar. Granted, the catalytic converter may have other job it does, but it's removal definitely leads to excessive fuel consumption.

Catalytic converter does not handle burn of fuel and it does not directly cause or stop excess fuel to burn.. It can only change the exhaust flow pattern and pressures and then the engine control computer would adjust for the exhaust changes and that computer could adjust to cause more fuel to burn... Also the O2 sensor and airflow sensor does the same.. (Its not in the grammar, its in the details of the message in the story)... Catalytic converter does not stop burn of fuel or cause fuel to burn more. Tampered exhaust flow is what causes the cars engine management computer to sense the new exhaust flow pattern and the computer increases the fuel burn from the engine.
You can reprogramme or replace the engine management module and solve the problem without a catalytic converter... Many car hobbyist here remove their catalytic converters to open the exhaust for better flow and power, and they also install new and programmable engine management modules to manage the engine according to their own specifications..
The catalytic converter removal causes only a reaction, not a direct cause of fuel consumption..
Another possibility is the factory exhaust configuration with CC, captures enough gas for the O2 sensor or mass airflow sensor to sense.. When that is changed and flowing too freely, the O2 sensor or mass airflow sensor can read low readings and then send compensation messages to the car computer to send more air and fuel.. That will cause excess fuel burn.. Again, its not the catalytic converter , it is the computer reacting..Yes it can be solved by replacing the CC or it can be solved by replacing the computer or reprogramming it where the source of the real issue is..
grin shocked
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by 19naia(m): 12:40am On Jun 22, 2015
bolaomega:
Please guys, How many 02 censor does a MB C Class 180 classic (w202)has?. I can see one at d engine manifold. Just to confirm. My catalytic converter has also been removed by "bad boys". How bad is this on the car?

I am not sure about your model Year MB, but this video shows MB models using two sensors... The two may or may not be identical as they have different exhaust phases to read from.. Mercedes does wonders sometimes.. Be sure to compare the two and assure they are the same or not the same.. That way you will know what to replace them with..

One is front and the other is rear or mid under body... The video shows you where to go to look for the underbody rear sensor...

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https://www.youtube.com/watch?v=SUjw-t8u6ak

The lack of Catalytic converter depends on the flexibility and programming of your car's engine performance management computer..
Engine is engine and they can run without a catalytic converter or sensors so long as the cars control computer allows it.. Advanced cars today are slaves to their computers.. It all depends on how the computer was programmed to react..
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by bolaomega(m): 8:10am On Jun 22, 2015
Thanks so much. My MB c class 180 classic is a 1999. Your write up n video has given me great insight. Though I can't notice any underbody o2 censor, Only the one @ d exhaust manifold. I'll have it fixed. I really appreciate.

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Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by bolaomega(m): 12:37pm On Jun 22, 2015
Please guys, what's an average price of a good 02 censor and catalytic converter, Toks/ new. For MB c class 180 classic 1999.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by 19naia(m): 6:05pm On Jun 22, 2015
bolaomega:
Please guys, what's an average price of a good 02 censor and catalytic converter, Toks/ new. For MB c class 180 classic 1999.

Check out these screen shots... The catalytic converter comes in several sections and they sell per section.. Front, rear and driver side or passenger side.. This is just a sample based on 1999 C280 6 cylinder..
I am guessing there are 4 sections and each around $166 or up to $200.. That can be around $700 to $800.. They can even be higher in price depending on what type you get or what car you have...
These things are being removed because they are worth a lot of money for just a single part.. Some cars are cheaper to replace engine for them than to replace the full catalytic converter array..
You may want to explore used CC's because the prices there can be extremely cheap or a rip off.. They steal the CC's often to remove the precious metals inside to sell. Costly metals.. It may be possible to buy a used unit that has been stripped of its catalyst precious metal.. That would be a real waste and double tap upon your wallet and confidence..

Check out these sample prices for reference point.
I did not include prices for O2 sensors because they are cheap items.. The big cost in US is the price you pay to install it right... Maybe mechanic labour in Naija is not so costly?
The magna flow version in the photos, has a wider diameter exhaust flow..That is for people who install wider muffler/silencers at the rear. Those are usually louder but they add more power to the car... If you dont have wide diameter silencer, then magna flow is excess for you and no need... If you dont have a twin exhaust, then you may not need two rear CC sections... Be sure to inspect how many section peices are required for your vehicle... Maybe its possible you only need one section as some small 4cylinder engines with single muffler have...?

Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by 19naia(m): 6:20pm On Jun 22, 2015
bolaomega:
Please guys, what's an average price of a good 02 censor and catalytic converter, Toks/ new. For MB c class 180 classic 1999.

O2 sensors for 1999 C280 as a refrence point, is between $75 and $54.. They also come in section units.. They have upstream and down stream sensors and some are for the left side and others for the right side..
Your car may not require more than two if not only one..

Here are photo price samples for reference.. I doubt your car will require anything more expensive than this.. It all depends on who you buy it from especially if you buy in Nigeria..

Never waste your money buying a used sensor. Only do so if you have no other option and you manage with a close watch on the thing.. You can get lucky if it was a new installation salvaged from a car that was wrecked.. But still, just try to always go with new sensors...

Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by bolaomega(m): 2:30pm On Jun 24, 2015
Sorry 4 the long break @ 19naia.Thanks 4 all ur inputs. Now My Benz, (description above ) it's been difficult for mechanics to really determine if the car has ONLY ONE O2 CENSOR Benz or TWO. But Only ONE 02 CENSOR can be seen upstream i.e @ engine manifold. Can't see d plug for downstream underbody. And can I really do without the CC if I have the O2 CENSOR(S) fixed? Thanks.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by 19naia(m): 4:25pm On Jun 24, 2015
bolaomega:
Sorry 4 the long break @ 19naia.Thanks 4 all ur inputs. Now My Benz, (description above ) it's been difficult for mechanics to really determine if the car has ONLY ONE O2 CENSOR Benz or TWO. But Only ONE 02 CENSOR can be seen upstream i.e @ engine manifold. Can't see d plug for downstream underbody. And can I really do without the CC if I have the O2 CENSOR(S) fixed? Thanks.

If you have been driving your car without the CC already for some time, then just expect the same driving to continue without the CC. O2 sensor is important for engine performance control. The CC being removed can affect exhaust flow and cause the various mass air flow sensors to send altered signals to the cars engine management computer. That can affect performance, but if you have been driving before like that, then continue if you like. You may never notice the altered performance of the vehicle anyway if you never tried comparing it with the CC installed. Maybe the computer adjusts and settles the altered reading matter automatically, or maybe not.

If it drives well enough for you with a good O2 sensor and does not seem like it is struggling, then continue. If your car is 4 cylinder, that may be the reason you see only one. All the multiple sensor cars i see, they have 6 cylinders or more. More air mass requires more sensors, but also sometimes cyclinders may malfunction on one side and that will alter the exhaust flow for one manifold side only..Another reason they put one sensor on each side.

Also rear and front sensors can help to sense if major leaks occur between the manifold and CC. Try without the CC if you have not already tried. If it does not agree with you, then you know you have more work to do ahead.
Sometimes a problem is not what it looks like. It can possibly prove to be an issue not related to any of the above.

My sister just took her car to mechanic after issues i was trying to diagnose. I diagnosed it as a wire short electrical problem making dead starting.. She took to the mechanic and he said tune up.. I doubted the professional mechanic and insisted a wire short.
The mechanic did the tune up and it stopped the car from vibrating but did not fix the dead starting issue.

I isolated the battery for test and the battery was good. Finally i started inspecting, touching and shaking various wires to see which would prove to be loose or cause the car to start normally. We found one at the fuse box and diagnostic plug terminal. The terminal is loose and shaking and when it is shaken, it causes the car to give dead starts or live starts depending on the pull and twist we do to it. Now we know where the problem is and how to shake the wire terminal to get the car to respond. The professinal mechanic was not able to discover that.

But also another person was having shaking engine and i suggested tune up or timing system work to eliminate any misfire. That worked to fix my sisters shaking engine, but it was not the same solution for the other man's car with the same problem. My educated suggestion was wrong in that case.
Just follow trial and elimination until you eventually discover. You will only result with better knowledge of your machine and detailed inspection of your car's various systems for confidence in their good working order. Do your O2 sensor first and try it. If not satisfied, try and get a computer diagnostic reading before deciding to redo the CC.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by bolaomega(m): 5:45pm On Jun 24, 2015
Thanks so much. Though i had done an initial diagnostic scan on d car with loads of report and all sorts, coolant temp censor, o2 censor, mass air flow too large, trotle position censor etc. I think initial buyer must have left all dis faults unattended to causing The car to burn fuel much with eratic idling and bit shaking engine. Just wanted to know what am up against as regards the o2 censor and the CC before I initiate repairs. You've been of much assistance. I'll keep u posted as it goes.

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Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by 19naia(m): 12:41am On Jun 25, 2015
bolaomega:
Thanks so much. Though i had done an initial diagnostic scan on d car with loads of report and all sorts, coolant temp censor, o2 censor, mass air flow too large, trotle position censor etc. I think initial buyer must have left all dis faults unattended to causing The car to burn fuel much with eratic idling and bit shaking engine. Just wanted to know what am up against as regards the o2 censor and the CC before I initiate repairs. You've been of much assistance. I'll keep u posted as it goes.

Ah yes, you have problems with the car. The fuel is burning much to compensate for air and throttle bad data. The mass air flow can be affected by the lack of CC, but the coolant temperature sensor should be changed, and the throttle sensor should be changed as well to see if that restores the Idling. The shaking may be related to the throttle sensor, but if you never did a major tune up, do that along with replacing the sensors. I would make CC the last item (and single most expensive) on the list if all else fails..

Good luck.. Mercedes is a good car to sacrifice money into, it will always give you back what you put into it.
I myself just bought an old toyota sienna ,drives good but needs a lot of work. So i redid all the brakes and front rotors, serviced all fluids and oils, got the code reading to find check engine light issue. It is the O2 sensor temperature monitor. So the sensor works but the temperature momitor on it is failing.. It drives ok like that but i will just keep an eye on it for the next round of spending i do for the vehicle..
Transmission problems as well but not affecting the smooth drive, just an abnormal bump in it if i rush into reverse..
I am not afraid of the problems because i bought it cheap with money left over to service the thing back to top shape. Its a Toyota and will always give back what you out into it, just like Mercedes.. I use it for rugged projects anyway so i rather an old car than to thrash a new one with rugged work.

I spent over $1500 to repair and make it a safe ride, full timing assembly replacement, all brakes, flush all fluids and oils, and full AC service. Next year i will focus on the transmission and O2 sensor if they show sign of degrading further.
Its a part time car only used when i am in town working, then i travel out of the state and country for the other half of the year without the car, riding bus instead.. Soon i will park it for 6-8 months in the garage while I travel the world and country by air and city bus or taxi.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by bolaomega(m): 9:55am On Jun 25, 2015
Thanks so much @ 19naia. I appreciate.
Re: Pls Help: Catalytic Converter Missing In Exhaust Pipe by iluvmoscow(m): 6:38pm On Jul 05, 2015
Hello,do you have any idea about after market Catalystic converter for Mercedez Benz 2012 C180 CGI. The price here in Russia is very expensive as quoted by my dealer and MB Russia. I will be very glad to receive a response from you.

Thank you

Daniel
izulife2008@yahoo.com

19naia:


O2 sensors for 1999 C280 as a refrence point, is between $75 and $54.. They also come in section units.. They have upstream and down stream sensors and some are for the left side and others for the right side..
Your car may not require more than two if not only one..

Here are photo price samples for reference.. I doubt your car will require anything more expensive than this.. It all depends on who you buy it from especially if you buy in Nigeria..

Never waste your money buying a used sensor. Only do so if you have no other option and you manage with a close watch on the thing.. You can get lucky if it was a new installation salvaged from a car that was wrecked.. But still, just try to always go with new sensors...

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