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How many catalytic converters does a TL have?

 
Old 11-28-2014, 11:31 AM
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How many catalytic converters does a TL have?

i have a 08 types and my cats went out ...was wondering how many does it have and ...can i run some cats of a 05 tl?...
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Old 11-28-2014, 11:49 AM
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two primary and 1 secondary.

so 3 all together.
the third one underneath the car doesnt have a sensor and will not throw a code if removed.
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Old 11-28-2014, 11:49 AM
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You have 3.
2 on the block, 1 on the J pipe.

The Type-S has different cats than the base model. Lower cell count I believe.
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Old 11-28-2014, 01:43 PM
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Agreed with 1black_seven as I don't believe they are x-compatible.
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Old 11-28-2014, 02:19 PM
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Originally Posted by 72types View Post
i have a 08 types and my cats went out ...was wondering how many does it have and ...can i run some cats of a 05 tl?...
The 05 cats will fit the type-s, you will lose a few HP due to the 05 cats being more restrictive. Cats are expensive so make sure they are really bad before replacing them. The 3rd cat is under the car and most likely not damaged, so you may only need the two primary cats attached to the engine. The rear cat is hard to get to and might be worth having a shop do for you.
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Old 11-28-2014, 03:06 PM
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Originally Posted by Hi speed View Post
The 05 cats will fit the type-s, you will lose a few HP due to the 05 cats being more restrictive. Cats are expensive so make sure they are really bad before replacing them. The 3rd cat is under the car and most likely not damaged, so you may only need the two primary cats attached to the engine. The rear cat is hard to get to and might be worth having a shop do for you.
Seconded. Make sure your cats are really clogged and the cause of your issues unless you like throwing money around, in which case I can send you my bank account information.
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Old 11-28-2014, 09:26 PM
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doubtful the cats went bad, certainly not all three. what makes you think they are bad? they should be under warranty for quite a long time as well as an emissions component.
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Old 11-29-2014, 11:20 AM
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lol...im goin to my buddys shop and ok tht makes sense..and yea i have this guy selling all 3 cats and the o2 sensors 250 is tat a good price?



well both my front and rear o2 sensors are bad and i think thts wat caused the cats to go bad...i could be wrong but idk

Last edited by Steven Bell; 11-29-2014 at 02:12 PM. Reason: Merged Posts
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Old 11-29-2014, 02:13 PM
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Punctuation is your friend....
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Old 11-29-2014, 08:07 PM
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Yep your wrong, O2 sensors dont cause cats to go bad
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Old 11-29-2014, 08:40 PM
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But bad O2s can cause your mpg to go down big time.
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Old 12-03-2014, 09:00 AM
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Thumbs up

If you look up the January 2008 Service Bulletin, there is an article there about the three catalytic converters, the codes that each will give you if there's an error, and a nice diagram of where they actually are in the car:

http://www.tegger.com/hondafaq/p0420/B080100.pdf

(Look on page 3)

As per the article (for anyone that doesn't want to click on the link):

Acuraís compact V6 engine uses three catalytic converters:
ē The front warm up three way catalytic converter (WU-TWC) thatís bolted to the front cylinder head
ē The rear WU-TWC thatís bolted to the rear cylinder head
ē The under-floor TWC thatís downstream and mounted to exhaust pipe A

Both of the WU-TWCs are monitored and can set DTCs. Each bank has a specific DTC: P0420 for bank 1 and P0430 for bank 2. The under-floor TWC isnít monitored and wonít set any DTCs.




A word of advice for the OP:

Replacing a cat is expensive. It's more common that the O2 sensor associated with that cat is bad, and it is cheaper to replace. You need to diagnose it correctly so you don't end up replacing a part you don't need only to find that you actually should have replaced the other part.
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Old 12-04-2014, 01:59 AM
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too many
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Old 12-05-2014, 01:47 PM
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As Hi Speed said, the cats will physically fit, but the non Type-S cats will be more restricting. We sell our XLR8 High Flow Cat for $299 that will provide you with better performance

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Old 12-05-2014, 01:58 PM
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Upstream 02 is an AF ratio sensor, and not just a dirty sniffer like the lower 2.
I doubt the cats are bad, although high flow ones are a good option.
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Old 05-08-2019, 06:04 PM
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Catalytic converter problem

I have a 2002 Acura TL I have allot of heat coming from the car. Which indicates my converter/converter's are stopped up. Which one is most likely to be stopped up
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Old 05-09-2019, 06:09 AM
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If I had to guess rear but only using logic and path of least resistance since it's the shortest distance out the back.
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Old 05-09-2019, 04:05 PM
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Originally Posted by Acman44 View Post
I have a 2002 Acura TL I have allot of heat coming from the car. Which indicates my converter/converter's are stopped up. Which one is most likely to be stopped up

Get an infrared thermometer and go under the car. Point the thermometer to the cats and you'll see very quickly which one is clogged.
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Old 05-10-2019, 10:57 AM
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Originally Posted by Acman44 View Post
I have a 2002 Acura TL I have allot of heat coming from the car. Which indicates my converter/converter's are stopped up. Which one is most likely to be stopped up
Now I'm being told a 02 sensor might be bad.
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