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Old 11-10-2013, 09:40 PM   #1
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Catalytic Converter Cleaners

Opinions, good, bad, indifferent...?

My jeep is throwing the P0432 code.
If my CC is going bad, then wouldn't it be worth taking the chance to see whether a cleaner would work (or maybe buy you a little more time) before spending a lot of money, replacing the CC?

Worse case scenario, the cleaner doesn't work.
On the other hand, if the cleaner DOES work, you just saved a lot of dough.

Seems to make sense.
After so many years, your CC gets clogged.
Then, someone makes a "cleaner" that supposedly will unclog your CC.

What do you think?
Just another "snake oil" gimmick?
Has anyone tried one of these cleaners and had it actually do some good?

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Old 11-11-2013, 05:19 PM   #2
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I had that code thrown, and it was just a bad o2 sensor. This was about 4 months ago and a code hasn't been thrown since I replaced it. Definitely a lot cheaper than replacing the cat.
Rock auto has best prices

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Old 11-12-2013, 02:39 PM   #3
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Quote:
Originally Posted by K.wag View Post
I had that code thrown, and it was just a bad o2 sensor...
For the P0432 code, which O2 sensor did you replace?
The DOWNSTREAM O2 on the back 3 cylinders?
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Old 11-12-2013, 03:08 PM   #4
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I had that code and this is what my cat looked like. Click image for larger version

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And this is what it is supposed to look like.

Click image for larger version

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You may want to drop them down and just check because it could have been dislodged and fallen down into the pipe like mine. I replaced all 3 cats because some parts of the pre cat had broken off and clogged the main cat as well.
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Old 11-12-2013, 03:14 PM   #5
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Quote:
Originally Posted by ColoradoTJ View Post
... some parts of the pre cat had broken off and clogged the main cat as well.
Did you have any issues of your engine not wanting to run, because of the clogging?
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Old 11-12-2013, 03:27 PM   #6
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Quote:
Originally Posted by vertical horizons View Post
Did you have any issues of your engine not wanting to run, because of the clogging?
It still ran, just really bogged down on the highway and and higher rpms.
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Old 11-12-2013, 03:33 PM   #7
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Quote:
Originally Posted by ColoradoTJ View Post
It still ran, just really bogged down on the highway and and higher rpms.
That's why I question whether (in my case) the problem is my converter OR an O2 sensor.

I don't have any issues driving on the highway. My TJ just idles a little rough, but that's all (so far). Of course, if it IS the catalytic converter, then I guess it could begin to give me problems down the road (literally & figuratively).
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Old 11-12-2013, 06:34 PM   #8
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It was the upstream sensor in the cat on the firewall side. haven't had any issues since
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Old 11-12-2013, 06:46 PM   #9
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P0432 is the Rear DOWNSTREAM sensor! NOT UPSTREAM!! I had the same issue as ColoradoTJ, the webbing material broke apart and clogged the hole, thus tripping the code. Instead of dropping $70 on a new sensor, dropw down the exhaust system, its really easy only 6 bolts, and look inside the mini cats. You should see webbing material, like the picture above, if not then you need a new system. If everything looks good then buy the sensor.

Here is a post with the part numbers for the optimal brand of O2 sensor for their respective spot. Oxygen 02 Sensor FAQ and Information - JeepForum.com
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Old 11-12-2013, 06:48 PM   #10
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I would disagree. The downstream simply checks the value versus the upstream one. If it detects an anomaly it throws the code. Therefore I guess it could be upstream (if it is bad it will return no value and thus the downstream will be different), downstream or the cats.

Either way, I can report from my experience of the Engine code being read by the shop, them telling me to replace the upstream sensor, which I did, and not having a problem since.

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