Toyota - Repair - Corolla :: Loudest Rumbling Exhaust Sound / Catalytic Converter Replacement?
Jul 8, 2016
Yesterday my 1995 Toyota Corolla (which runs well otherwise) started making the loudest rumbling exhaust sound I've ever heard whenever I stepped on the gas pedal. It also felt like it had trouble accelerating when I would try to get going after a stop. I took it to a mechanic right away, who says it needs a new catalytic converter and resonator pipe.
My boyfriend says this is a repair he could do. He has done some car repair and worked with a mechanic before, so I am considering trusting him on that, but I don't know what types of repairs he's done before and I know he has never worked on this model. What would you take into consideration whether or not it would be safe to attempt this repair at home?
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After hearing some loud noise coming from my exhaust system, it was determined that there is a hole (from rust) in part of the cat. assembly. Three shops advised for replacement, there are no aftermarket products for this unit. I have NOT gotten any error codes, the only problem is the noise. What to do? The car is 10 years old with 86000 miles. I have been reading about some of you getting just the one piece and having it welded on, but I do not believe any of the shops here will do that, and indicated that it would be a very temporary fix.
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I recently had the catalytic converter replaced on my 1999 Toyota Corolla and the gas mileage dropped from about 28 mpg to 21 mpg.
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My wife's car is a 2002 Prius, 149 k miles. Lately the check engine light has been coming on. I took it to the dealership, and their assessment is that the catalytic converter needs to be replaced. They are recommending about $2,000 + of repairs. While I am contemplating the practicality of investing that much in keeping this car going I'm wondering if it harmful or dangerous to continue operating this vehicle.
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Long story, I'll try to make this short, 2000 E250 5.4L What would or could happen if the catalytic converter was removed from the exhaust system?
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I have a 2001 Ford F250 Diesel. I recently cut the 4 inch exhaust pipe right behind the end of the cab cutting off the muffler and I thought the catalytic converter as well. I was talking to another super duty owner and he said he thought there was another catalytic converter further up in the pipe. Is this true? If so, how far would would I have to cut it to cut it off. Would this make the truck any louder...wouldn't mind if it did.
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My 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.
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My wife drives a 2001 Suzuki XL7. While she was out, the exhaust heat shield fell off the catalytic converter. My question is does this affect the car's ability to function in any way? Is it still safe to drive? My wife is freaking out over it.
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I own a 2000 E 250 Econoline van with 170,000 miles. I've been encountering loss of power on acceleration for months. Terrible gas mileage (8-10 mpg) and just recently, I get that rotten egg smell when I gun it and and travel above 65/70. I can feel heat from under the van when i step out as well. I've been blowing individual coil packs every other month after a long drive with a lot of inclines. It all points to a clogged catalytic converter. This van has 3. A front left and right by the manifolds, and a large one before the muffler. My question is, what causes them to go bad? I want to fix the cause before spend the money on new cats. Ive heard a rich fuel mixture could do it. Are there sensors that need to be changed?
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My husband,who is an engineer and has done all of our car maintenance for decades is stumped by our 2000 Mazda MPV. He replaced the catalytic converter and put every thing back together, but the car won't run. Will start, but dies right away. Took off new cat,and runs with that off, but not sure why it won't run with the cat on.
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Replacing a Cat with a test pipe for added HP?
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Car is a 2001 MK4 Jetta with 2.0 Auto Tranny and 120k miles, stock exhaust
A little over a year ago I was getting a cel and the code that was being thrown was a DTC 16804. I changed the cat and both o2 sensors and the light went away for almost a year. The other day I was driving and the light came on again. Scanned the car and its the same 16804 code. I replaced the front o2 sensor thinking it was bank 1 but it didn't solve the problem. I clear the code and it comes back the next day. I'm finding it hard to believe that the cat is bad after only a year. I checked for vacuum leaks, faulty MAF and nothing under the hood looks out of whack. My mission is up next month and the car won't pass with this code.
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I was told that my 1997 kia Sephia needed a new catalytic converter by a very reliable shop. My car had been stalling out and running very rough. They did replace the distributor cap which seems to have increase the overall performance and that same day i had a smog check and passed with flying colors! Why would I still need to replace my converter if I passed smog. My car has only 36k on it.
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What would cause both Cat converters to fail at 20,000 mi.? Mine went out and the back pressure caused the engine to knock under acceleration. Also blew out an injector and plug. Luckily it was under warranty but wonder what could caused it.
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The clamp connecting the resonator and the catalytic converter is leaking around the edges. I changed the bolts and tightened the clamp but still leaking.
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Got 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.
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Chk engine light is on. Checked it at Advance Auto and indicated either cat or the O2 sensor (rear). So, I went to replace the O2 sensor and learned the hard way that you can't just unscrew the nut. I torqued off the stud to which the O2 sensor attaches. Muffler shop told me you need to heat up the stud/nut first to remove it. Oh well, lesson learned. So, I'm looking at replacing the pipe with the catalytic converter attached since I can't seem to fix the broken stud (or actually get the one I didn't break off). The problem is, my car is apparently a CA model and has the special cat on it. I live in VA. What sort of problems might I run into if I replaced the cat with a non-CA version? They are significantly less expensive. This is for a 2003 Toyota Siienna
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My Toyota Tundra 2011, driven enough to haul a horse locally (6000 plus miles) is now unable to go above 30 mph, it was fine last week. Toyota dealer says it is both of the air injection units and switch. Of course it is out of warranty 3 months.
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1996 4runner here (187,500miles), with weld in after market cat (on when purchased, with less than 1000 mile on it). started throwing the 420 code beginning of last summer. Replaced both O2 sensors and same results. Was coming on after every 30-40 miles after resetting, replaced wires, plugs, cleaned throttle body started coming on ever 120 miles or so. Now in the middle of winter it has gone 450 miles and still has not come back on?? Does the winter fuel blends in Georgia, or cold more dense air make a difference on cat performance? Still plan to replace it with a direct fit with a warranty but curious if I am overlooking something.
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Toyota 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.
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I had my local garage do their electronic check when my check engine light came on. They said the code they got indicated a failed catalytic converter and quoted me $720.00 for a California compliant replacement, including labor. I live in Connecticut. I'd like to take a few days to get a second opinion and second quote, but the garage manager said that driving it in this condition would risk fouling the oxygen sensor, which I recently replaced for a couple hundred bucks.
Should I be concerned about fouling the oxygen sensor by continuing to drive the car? 2000 Toyota Camry...
I looked under the car and the rear attachment bolts to the converter are rusted beyond recognition. I'm tempted to try replacing it myself but it may be a bit beyond my skills.
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