A 2002 Toyota Highlander how many catalytic converters does it have?

We were told that our car had 3 catalytic converters, because our mechanic just replaced one & last March replaced one?

My car has 35000 miles.

Experienced mechanics share their insights in answering this question :
Depending on the options your car came with from the factory (single exhaust or dual exhaust), your car should have one or two catalytic converters. I would recommend having a certified expert, like one from YouMechanic, come to your home to inspect your catalytic converter to determine the need for a replacement again.

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Depending on the options your car came with from the factory (single exhaust or dual exhaust), your car should have one or two catalytic converters.
This car has THREE catalytic converters and two mufflers (California emissions compliant).
Depending on the year, your Toyota Camry could have one or two catalytic converters. Older models have one on the underside of the front of the vehicle while newer models carry a second one under the hood. in 2020. We`ve put together a guide on the Toyota Camry`s catalytic converter location.
How Many Catalytic Converters Does Your Vehicle Have? Most cars usually have one single convertor, but cars with dual exhaust systems tend to have two converters. Some vehicles also have more than two converters, which are generally required to meet emission standards.
The short answer is yes. Temporarily driving without a catalytic converter won`t damage your cars engine in any way.
The function of the catalytic converter is to break down harmful pollutants that are created by your Toyota Highlander during the combustion cycle and convert them into less harmful gases.
The number of catalytic converters differs by generation. The earlier models have two catalytic converters, while the later models comprise four.
A standard catalytic converter contains about 3 – 7 grams (0.106 – 0.247 ounces) of platinum.
Second, the Highlander has two and sometimes three catalytic converters.
Cars commonly have only one catalytic converter. However, cars with a dual exhaust system will likely have two. Catalytic converters are meant to regulate the exhaust from the engine and through the rest of the system. Because of this, it can be easy to notice if something is off with your car`s catalytic converter.
Recommended Services. Your vehicle has two catalytic converters.
Most cars only have one catalytic converter.

But if a car has been modified to have a dual exhaust, it could have two catalytic converters.

While removing the catalytic converter will not harm the engine, you can expect a reduction in engine power as well as a reduction in fuel economy.
Catalytic Converters should run for at least 10 years, but it doesn`t need to be swapped out as soon as those 10 years are up. It only has to get changed once you start to see those issues occur and if it`s recommended by the service technicians.
A straight pipe exhaust system helps your engine run more efficiently. That`s because the backpressure created from the catalytic converter and muffler no longer exists. Less pressure on your engine results in more efficient operations, so you`ll see a slight increase in fuel efficiency.
Certain vehicles are more vulnerable to catalytic converter thefts than others. The Toyota Prius is a frequent target because, as a hybrid vehicle, it sports a more complex exhaust system. This means that it`s more expensive and, therefore, more valuable for thieves.
Catalytic Converters should last at least 10 years, but they don`t have to get swapped out as soon as those 10 years are up. It just needs to get replaced once you start to notice these problems occur and if it`s recommended by our service technicians.
We do not recommend removing the Catalytic Converter from any street-driven vehicle. Running a cat-free exhaust is only recommended for closed-course competition vehicles.
Cars can have more than one catalytic converter for the same reason cows have four stomachs: the product that comes out is more desirable to that which is downstream in the exhaust/digestive system.
The Model Of Your Car

Other models also tend to have higher quantities of precious metals in their scrap convertors. For instance, the Toyota Prius has more residual precious metals because its hybrid system makes less use of them; thus, scrap yards are willing to pay more for the catalytic converters from these cars.

Content will vary significantly depending on the vehicle model, but on average the ceramic weight is approximately just less than 1 kg, and the precious metal content is between 0,2% and 1%.
1. Ferrari F430 ($3,770) As you might expect, the Ferrari F430 is hardly a cheap vehicle, so its components are wildly expensive, including its catalytic converter. The F430`s catalytic converter is priced upwards of $3,700, which is already exorbitantly expensive by itself.
According to data from 2020, the most expensive catalytic converter belonged to the Ferrari F430, with a mind-popping $3,770.00 price tag. Moreover, the F430 needed two of them, so a full replacement would run car owners $7,540 before labor costs.
One each side built into the exhaust manifolds and another one underneath.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

A 2002 Toyota Highlander how many catalytic converters does it have?
ANSWER : Depending on the options your car came with from the factory (single exhaust or dual exhaust), your car should have one or two catalytic converters. I would recommend having a certified expert, like one from YouMechanic, come to your home to inspect your catalytic converter to determine the need for a replacement again.

What would happen if the wrong catalytic converter was installed in my 2001 Toyota Camry
ANSWER : Hello. The wrong converter will cause your check engine light to come on and will cause you to not pass emissions. It can also cause some performance and efficiency issues over time. There are specific converters built for all vehicles and that is what needs to be used, especially in California. You need to take it back to the shop that installed the wrong one as it is against emission regulations to install the wrong converter in California.

I have a 2002 toyota camry LE engine wich i want to use on a 2004 toyota camry XLE .is my 02 toyota camry engine compatible ?
ANSWER : Hi there. Assuming that both engines are the same size, the compatibility of "fitting" should be OK. However, since this is a service we don’t offer, we’re not best suited to provide the best advice on this. I can tell you that a common problem have with replacing motors is communication with the ECU. In most cases, it will require reprogramming by a specialist in order for all the systems to work correctly.

Hi Mr. Nicholas: Engine light of my Accord Lx 2010 comes on. I want to be sure the problem is with the catalytic converter or O2 s
ANSWER : Hi there. In short, yes – it is highly probable that the check engine light is not 100% caused by the catalytic converter. Most OBD-II trouble codes related to this system are actually caused by O2 sensor failure, electrical harness failure to O2 and the catalytic converter or other emissions systems. On your Honda, there is one catalytic converter, that is comprised of a few individual sections. When it it replaced however, it is replaced as a single unit. In most cases, when a Honda dealership tells you that the catalytic converter is the source, 80% of the time they are correct. I would recommend reading this article and asking yourself if you are experiencing more than 50% of these are occurring.

Changed catalytic converter, no lights on dashboard, but codes for catalytic converter & O2 sensor still remain
ANSWER : Hi there, thanks for writing in. I am not sure why you changed your catalytic converter. Assuming you had a P0420 code, replacing the catalytic converter should of resolved that code. The codes originally stored need to be cleared. The fact your check engine light remains off tells me, you may have fixed the problem. Try disconnecting the negative battery terminal for at least 2 minutes, reconnect. Start and drive the vehicle for 10-15 miles. Re-check for codes. If a code returns on the first drive cycle (pending code), a problem still exists. The check engine light should come back on (the next drive cycle) if, the fault is recognized by the computer. An exhaust leak before the oxygen sensor will cause O2 sensor and catalytic converter codes. If you are having trouble identifying the fault, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

I would like to know how many O2 sensor in Toyota Caldina, model 2002 AT211 and auto transmission. 2002 Toyota Caldina
ANSWER : Hello – all of the third generation Caldinas (2002-2007) came with 4-cylinder engines, and should have 2 oxygen sensors. There will be one before the catalytic converter, and one after the catalytic converter in the exhaust system. For assistance, I recommend an oxygen sensor replacement service performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, and replace this component.

Does traction control depend on catalytic converter functioning properly?
ANSWER : You are right, the traction control system is not related in any way to the exhaust system (e.g., the catalytic converter) in the vehicle. Traction control involves wheel speed sensors, the ABS system, and electronic controllers. If there is a problem with the traction control system on your vehicle, it is likely that diagnostic trouble codes have been stored and those codes will provide the key clues to finding, and repairing, the fault in the system. A certified Mechanic, dispatched by YourMechanic right to your location, can perform a traction control system diagnostic and let you know of the required repairs. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Can i put a 2000 toyota celica GT automatic transmission in to a 2002 toyota celica GTS
ANSWER : The only way to be absolutely certain that it will fit, is to make sure that it’s the same part number, and that the mounting points are in the correct place. That said, many people swap different transmissions into their cars, so as long as the engine is the same between the two models, they should bolt together.

Also, since yours is only two wheel drive, you don’t have to worry about matching gear ratios. It should be noted that the specific gear ratios may vary between different transmission part numbers, so you should take that into account because gear ratios alone can affect your acceleration, top speed, cruising rpm’s, and fuel mileage.

If you just want the vehicle to work as it did from the factory, then your best bet is to use one with an identical part number.