I have noticed lately, when the car is hot, while pulling into my quiet garage, and even when the car is in park, engine running --- hearing some clicking / ticking coming from, or near the Catalytic Converter.... It sounds as if a small piece of metal is rattling inside with the flow of air... It stops clicking once the engine is turned off.
View 5 RepliesMy exhaust on my 01 was rattling. It was coming from the catalytic converter, I assumed it was the heat shield. Put it up on the lift and lo and behold it was something in the cat that was rattling. I was popping a code for the cat anyways so figured I'd just swap it out. Fast forward to tonight. I get the car back up on the lift and I wiggle the cat but no rattling? I go farther back to the first muffler/resonator now it's rattling. It's not a hanger or a heat shield or metal to metal on the outside, there is obviously something of substantial mass inside of it I can almost feel where it is by wiggling around. I chose to wait and cut the exhaust up a different night because I plan on taking that section out as well now, hoping to get out whatever is rattling. If not I'll just have some spare pipe on hand to replace it.
View 6 RepliesToyota says the code is P0420 and the Catalytic Converter is rattling under heavy acceleration showing the Catalytic converter is bad and should be replaced. Toyota wants 2,334.00 which seems very high to me. Is it the Catalytic converter? The car is a 2004 Toyota Prius.
View 12 RepliesGot a rattle from the car, I think it's the catalytic converter heat shield. Looking for any pictures of what it looks like? I don't know if it is a full cover on our Toyota's, or a half cover. I will post a picture of what mine looks like now that it is rattling later today. Hoping it's an easy fix.
2009 Corolla CE 1.8L.
My cat converter is rattling on driver's side and check engine light is on. Rattle is the inside of the converter, not the heat shield. How much $ and what kind of converter replacement is recommended?
View 10 RepliesI have a 2006 hyundai sonata 3.3L V6. Only happens on a cold start. I'll start the car and it won't tick while at idle. But as I drive away ill hear it for maybe about 2 mins only maybe in first gear until the car slightly warms up and then it's gone completely.
View 30 RepliesWe have a 2006 impreza, that we've been told the Catalytic converter is going out. We cannot seem to determine if there are one or two converters on this car, and want to know if this is something that we could do ourselves once we find out where everything is at?
View 18 RepliesI needed to replace the same (rear) catalytic converter of my 2006 Honda Pilot LX (2WD) in less than 16 months. The first time it happened in October 2014 when the vehicle had 160K miles (Car's service code was P0420), and the second time it happened this month (same code P0420), when the vehicle had 184K miles. I have it replaced at Honda Service both times.
When it happened for a second time so quick (160k miles wth first converter vs 24K miles with the second converter), I asked Honda Service for a free warranty replacement, but they said it only has 12K miles, and 12 month warranty on repairs, they called Honda corporate to see if they would do anything extra (they did not), but Lute Riley gave a discount to do it at their part & labor cost only ($800 first time vs $550 second time).
What could be the cause of the second catalytic converter to go bad so quick? I have been the owner and only driver of the vehicle since i purchased it new and my driving habits have not changed.
I wanted to get some input about lowering my 2010 Corolla LE. I wanted to go about 3 inches, but have been told i will need to replace some extra parts. Not sure where to begin, but i'm not afraid to ask questions or get dirty. I hear a lot of different things and i'm on over load with info.
View 7 RepliesI have a 2006 Jeep Liberty with 135,000 miles. My check engine light is mostly on. Sometimes it is off. One mechanic tested the car and said the catalytic converter is bad. Another mechanic said that test can often be false positive and it might only be the O2 sensor. The difference between the two is about $1,000. Which mechanic is correct? My car is registered in a state that doesn't do car inspections.
View 19 Replies06 Camry SE I4
I had to replace my catalytic converter because of the code I was getting. It wasn't difficult to do, but took me a while because I had to transfer the thread rods to the new CAT. Once the new CAT was installed, I went to test her out, but noticed that the car all of a sudden, has no electrical power. Nothing at all. I checked all fuses and nothing is blown. The only electrical I messed with on the car was the O2 sensor.
Car has a brand new battery from yesterday. The only thing I didn't do is install a support bracket on one side, because it was missing a bolt and one thread rod was stuck in the old CAT, i couldn't remove it.
A friend suggested that the missing bracket may be causing a ground issue. Is this true?
The problem is that it appears the torque converter is locking up so early even right after getting into second gear at speeds between 20km/h and 40km/h. This causes shuddering/rattling coming from under the hood. If I am not mistaken a torque converter should lock up at speeds 80km/h+. I've never seen this behavior on any car before. I'm not sure what kind of damage is being done either by all this shuddering and rattling going on with the transmission. I feel that this should be something that needs to be addressed via some software update. Is there any software update in regards to this issue?
View 5 RepliesI have a 2011 Sonata SE that I really like but it has a very loud clicking noise that comes from under the car. The dealer says that it is probably the cat converter expanding. I have contacted the Hyundai customer care and they say that this is normal.
View 13 RepliesI recently had my catalytic converter replaced with a non-OEM cat. The check engine light came on and a different shop (different from the shop that replaced the cat) said that it will keep coming on because I had the cat replaced with a non-OEM cat.
View 3 RepliesI have a 2001 VT GTI with 155K miles on it. It is in very good condition. I have loved the car except for the high maintenance costs that typically seem to be associated with VWs.
I found out this week after my check engine light came on that the car needs a new catalytic converter and a new new secondary air pump.
Let's assume that this diagnosis is correct and the repair is accurate for the sake of this posting (and I have no doubt it is). In other words, I don't want to get my question derailed on that issue.
The car has new Michelin tires on it and runs well. The problem is that it will fail the state emissions test I am required to take next December, and I will either be forced to have the car repaired or will not be able to get updated license tabs (isn't that sweet?!).
It seems that I have a few options:
1. Get the repair done (ouch) and keep driving the car for a few more years. Repair cost is about what the market value of the car is (from what I have seen).
2. Sell the car "as-is" between now and December and see what cash I can get out of it. Any buyer will discount the value of the vehicle based on the repairs needed. Of course, then I'll need a replacement vehicle of some sort.
See related guides and technical advice from our community experts:
How to Replace a Catalytic Converter
Step by step instructions for do-it-yourself repairs
Browse all: Air Intake and Exhaust Guides
I have a 2000 Lincoln Town Car with a single exhaust system, part of/attached to the frontal area of the exhaust "Y" pipe are two lumps with heat shields, the muffler is obvious in the mid-section of the car, but are those "lumps" the catalytic converters, and if so, why two when the older cars had only one?
View 2 RepliesSomeone put sugar in my gas tank so I had it worked on at the Dodge place they replaced my fuel pump..fuel filter cleaned the tank..flushed the lines cleaned my injectors and replaced the plugs..I went to pick it up I barely made it a mile down the road I had no power and a lady flagged me down to tell me to pull over because I had sparks coming from the bottom of my van I looked under the van and the catalytic converter was red like hit coals the Dodge place is telling me its my flex plate? I think they are misdiagnosing the issue because before the sugar issue I had no problems with my van?
View 14 RepliesI have a 2002 Toyota Prius that is currently in limp mode...
Took it to the dealer for diagnostics and they said the Catalytic Converter has failed...So I went online, bought a new one and replaced it. The symptoms prior the Cat replacement were still there...mpg loss, power loss, and exhaust air was not exiting the end of the pipe but actually leaking out the connection point where the Cat and the manifold met.
So this morning (Kind of Cold) I went out site and started my car. I heard some noise under the car and I noticed that the noise bad been coming from the Catalytic Converter area and there was water dripping off of it.
My guess is that it was just warming up and the water was from the cold. Is it normal?
I have a GLX V6 ...
I own a 2004 Acura RSX that I purchased new nearly 10 years ago. The car currently has 182,000 miles on it. Two years ago (approx. 130,000 miles), I had to replace the catalytic converter and both O2 sensors. This lightened my wallet to the tune of $1,200 (aftermarket franchise, OEM replacement). A few weeks ago, the "check engine" light came on. I used my scanner, and got the dreaded P0420 code, and had it verified by another shop. O2 sensors were OK. What REALLY shocked me was that replacement catalytic converters are only warranted for 5 years/25,000 miles (50k in CA). The first replacement piece lasted 52,000 miles (less than half the miles/years of the original part)
Here are THE QUESTIONS: What killed this catalytic converter? What can I do to prolong the life of this part? My car has the base powertrain that (according to the owner's manual) recommends 87 octane fuel. That's all I've ever used. The mechanic suggested moving up to mid-grade fuel, though he admitted that he wasn't sure.