Remove or replace main cat
#1
Remove or replace main cat
I have an '03 Maxima SE. Check engine light gives me a P0430 code which tells me that my main cat is bad. My mechanic will replace the cat for $500 or remove it (replace with a pipe) for $150. I would prefer to go with the removal option. Is there something that needs to be done to the O2 sensor if I have the cat removed?
#2
Main cats don't throw codes. It's one of your precats that is the issue. I believe it's the precat located between the radiator and engine.
And you cannot replace it with a pipe (although that would be nice). You have three options: replace cat, pull the current cat off and gut it, or install headers.
And you cannot replace it with a pipe (although that would be nice). You have three options: replace cat, pull the current cat off and gut it, or install headers.
#4
#6
#9
I have an '03 Maxima SE. Check engine light gives me a P0430 code which tells me that my main cat is bad. My mechanic will replace the cat for $500 or remove it (replace with a pipe) for $150. I would prefer to go with the removal option. Is there something that needs to be done to the O2 sensor if I have the cat removed?
I had that code in my max and replaced the air filter and it went away.
It says for the 01 max it could be
Injectors
Intake leak
Catalyst failure
Spark plug issues
ignition timing issues
If it's toast it's toast
Last edited by NmexMAX; 07-12-2016 at 03:47 PM.
#14
Main cats don't throw codes. It's one of your precats that is the issue. I believe it's the precat located between the radiator and engine.
And you cannot replace it with a pipe (although that would be nice). You have three options: replace cat, pull the current cat off and gut it, or install headers.
And you cannot replace it with a pipe (although that would be nice). You have three options: replace cat, pull the current cat off and gut it, or install headers.
Thanks for the tip. I bought a left front cat from RockAuto.com, replaced it and the P0430 code went away.
Now, I'm getting a P0021 code. AutoZone tech says I need to replace my variable timing right solenoid. Have you seen this code on your Maxima?
#15
Wasted money replacing the precat. Do the rear one, too, unless you like to buy engines.
I'd ban all of you.
#16
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