Device placed within the exhaust system used to catalyze pollutant gasses found in exhaust gasses. Is normally located after the exhaust header, but before the muffler. Can be configured as 2-way or a 3-way: the 2-way affecting hydro-carbons (HC) and Carbon-monoxide (CO) gasses; the 3-way affects ...

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10
votes
3answers
312 views

What exactly is a catalytic converter and why does it need to operate within a certain range?

I heard here that a catalytic converter needs to operate within a certain "chemical range" otherwise it will generate unnecessary heat. What exactly is a catalytic converter? How does it work? What ...
4
votes
2answers
47 views

Bad Cat? Bad smell in Car when heating on [duplicate]

Have a 2004 Toyota Corolla with about 110,000 miles. When I ride the car with the heat on, every now and then it smells like rotten eggs. I looked online and people say I may have a bad catalytic ...
8
votes
4answers
212 views

How can I tell if I have bad cats?

No, not that cat! Catalytic converters - or "cats" - have a nasty habit of failing with age. What are the symptoms associated with a cat that's gone bad? Are there any tests that could ...
1
vote
2answers
61 views

Can a universal catalytic converter be legally fitted to my Prius in California?

My 2006 Toyota Prius with 280k miles is throwing the P0420 code, which means that it (probably) needs a new catalytic converter. I live in California, which makes life much more difficult to replace a ...
0
votes
2answers
52 views

2006 Scion Tc Base - lots of vibration and bad smell from exhaust

2006 Scion Tc base automatic transmission, has 149k miles on it.The car used to vibrate a little at idle. It suddenly started vibrating a lot. It is shaking as if there's an earthquake! Idle rpm at ...
3
votes
2answers
53 views

1980 Chrysler LeBaron Failed Emissions Test

My 1980 Chrysler LeBaron (V8 318ci) just failed an emissions test. I'm coming from a state without emissions testing to a state that requires it. Specifically, the only part that failed was the ...
5
votes
2answers
352 views

Will Driving 100 Miles With a Misfire Damage My Car?

Background: I have a 2002 Dodge Dakota Quad Cab slt with 4.7L Magnum V8. My check engine light came on when I was at work. I then drove 20 miles home to my house, pulled out my scan tool and ...
1
vote
2answers
92 views

Half of my cylinders aren't firing. Is it safe to move my car to a garage (~30km)?

I am having some issue with my ECU or ignition system which I can't fix myself. Only two of my four cylinders are firing. Is it safe to drive my car to the official mechanic at 30km distance? Should I ...
2
votes
2answers
59 views

DPF (Diesel Particulate Filter) and Turbo: Golf TDI Bluemotion(hybrid)

I have a problem with my 2012 Golf TDI Bluemotion. The DPF and turbo need to be replaced. The replacement costs about R65 000 SA Rands. Is this common with this TDI blue motion engines or it's my ...
4
votes
2answers
206 views

How does push starting damage the catalytic converter?

In the manual for my 2003 Opel Agila it says: Do not start by pushing or towing, Your vehicle is fitted with a catalytic converter, it must NOT be started by pushing or towing. Why & how ...
4
votes
2answers
202 views

Removing catalytic converters on a 2000 v6 Mustang?

I live in Oklahoma, so we don't have to get emissions checked. I have a 2000 v6 3.8l Mustang. I bought the car for $3500 at 70k miles (it was a really good) so I don't want to spend more money than I ...
2
votes
1answer
82 views

2001 Elantra keeps throwing the same check engine light code

I replaced the main catalytic converter and manifold on my 2001 Hyundai Elantra, I believe it was last summer. A few weeks ago, I was on a long trip and the check engine light came on with the ...
3
votes
1answer
1k views

How long will my motor last having clogged catalytic converters?

My catalytic converters have been clogged for awhile, and the o2 sensors need changed because of this. What is it doing to my engine? And gas mileage for that matter? If i take out my ...
4
votes
1answer
1k views

How to determine if P0430 is O2 or catalytic converter

2009 CTS4 3.6L P0430 catalyst below efficiency bank 2 comes on periodically. (There are no other codes being thrown.) I put a data logger on it today on my drive to work and the rear sensor is ...
2
votes
2answers
133 views

Can the catalytic converter from a 2005 VW Beetle be used in a 2004 VW Jetta?

Someone I know just seriously damaged their 2005 VW Beetle and it may not be worth fixing (drove over a divider and at least broke the transmission). The car has approximately 34k miles on it, if I ...
4
votes
1answer
218 views

Is it normal to attach a catalytic converter with U-bolts?

I need to replace my catalytic converter. The current one is held in place by U-bolts. Two U-bolts between the cat and the manifold exhaust pipe (looks like a patch). One holding the exhaust pipe to ...
0
votes
1answer
689 views

Can faulty O2 sensor cause omission check engine light?

I have had a check engine on a 2001 Subaru Legacy for some time now. Went to mechanic to fix few other things and he told me the oxygen sensor and catalytic converter needs to be replaced. The ...
4
votes
2answers
595 views

How to install a California oxygen sensor into a federal catalytic converter assembly?

I have a 2000 Mitsubishi Galant ES 2.4L Engine with California emissions. Installed is a new federal catalytic converter assembly. The problem is that I do not know what kind of oxygen sensor to ...
9
votes
1answer
1k views

Can a head gasket leak cause the cat to plug?

Well, like the title reads ... I replaced the heads on a Dodge Ram V8 5.9L gas engine. It's now running like the cat is plugged. Can blowing the white plume of coolant exhaust out the tailpipe cause ...
1
vote
2answers
99 views

1989 Nissan pintara problem

I have a 1989 U12 2.4l Nissan Pintara. It started running really rough one day and when I got home the exhaust manifold was glowing red hot. I changed the catalytic converter and it still is running ...
9
votes
3answers
6k views

Catalysator broken? Odd rope coming out of the exhaust pipe

[UPDATE] SOLVED! Hurray! The muffler had corroded inside and it blocked the exhaust system, making bad to motor. I got it fixed and the car energy efficiency improved from 12-15 liters/100km to ...
1
vote
1answer
177 views

P0420 code for 09 Murano

I've had several opinions stating my car needs a cat converter but after failing inspection today, the mechanic said it might need ECT sensor changed. I've read previous posts that cat converters ...
2
votes
3answers
2k views

Will a universal catalytic converter set off the check engine light on an Infiniti G35?

I have a 2004 Infiniti G35 and the bank 2 catalytic converter has triggered the check engine light. If I replace it with a universal Magnaflow catalytic converter (approximately $100) will the check ...
4
votes
1answer
660 views

Catalytic converter heat shield fell off .. Drive home or call tow truck?

One hour drive from home with family. Heat shield fell from 2007 Honda accord. Both top and bottom halves of shield rusted from corner bolt. Safe to finish trip and repair tomorrow, or is the ...
2
votes
1answer
551 views

Catalytic converter possibly bad. How soon do I need to replace?

2004 Cadillac SRX V8 AWD is making a rattling sound when idle, and mostly or completely goes away when RPMs increase. From what I've found, this is a bad catalytic converter. It is under warranty ...
3
votes
1answer
700 views

Why does the price of Catalytic Converters vary so much?

My check engine light came on and the diagnostic code says it is a problem with the catalytic converters so I'm getting ready to schedule an appointment with a mechanic to take care of that. The ...
1
vote
1answer
542 views

What's the purpose of the cover on the catalytic converter?

On my 1990 Honda, it's falling apart. I'd like to just rip it off; will that cause any problems? More specifically: will the car pass New York state inspection with a missing cover?
2
votes
2answers
2k views

Catalytic converter readiness monitor never sets

I Reset the computer in my 1998 Chevy Astro, but even after driving around for a few days and putting it through the GM drive cycle, the OBDII reader is saying that the CAT monitor is not ready. I ...
7
votes
3answers
62k views

Check Engine code P0420 Catalyst efficiency below threshold bank 1

After months of normal driving with no problems, my 2003 Honda Civic EX check engine light came on during a long trip. Got it scanned and it's P0420: Catalyst efficiency below threshold bank 1. They ...
3
votes
3answers
246 views

How much of the exhaust is the “cat-back”

My brother-in-law's car has just failed inspection. One of the items listed was a "cat-back." Since the bill is astronomical, I was wondering how much of the exhaust system is encompassed in this term ...
9
votes
1answer
5k views

What are the tell tale signs of a catalytic converter that might be going bad?

I've owned two vehicles whose catalytic converters were recalled due two a couple of reasons: one being the quality of the CC and the other being a reduction in power due to a material building up and ...