P0421 Recall Over 100k What Can I Do?

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Mar 13, 2015, 01:28 PM

#16

OZR_Lancer

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Quote:

Originally Posted by rickb928

I did it two weeks ago. Fixed. There are stickies around here that describe the fix.

Save yourself some trouble and heat up the exhaust pipe to loosen the O2 sensor.

I tried to fix mine but no amount of force can unscrew that sensor under the car.. I tried vise grips and o2 socket adapter and my wrench and wont budge.. im gonna have to take it to a shop to remove. much easier and im running out of time

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Mar 13, 2015, 01:38 PM

#17

CrAnSwIcK

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Quote:

Originally Posted by OZR_Lancer

did you try hot or cold? also some kind of penetrating lubricant may work...you need more moment...a breaker bar, or a big combination wrench and a hammer have always worked for me...

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Mar 16, 2015, 12:46 AM

#18

OZR_Lancer

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Quote:

Originally Posted by CrAnSwIcK

did you try hot or cold? also some kind of penetrating lubricant may work...you need more moment...a breaker bar, or a big combination wrench and a hammer have always worked for me...

it looks like my cat on the header, I got one on order, had to be cali specific its gonna arrive on Friday or Monday next week

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Mar 16, 2015, 09:17 AM

#19

rickb928

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Yes

I'm pretty sure you HAVE to heat it up. I put a propane torch to it for about 3 minutes, on the pipe downstream of the sensor, and it popped right out. I did put PBBlaster to it the day before, that had no effect.

And CA specific cats are special, just like everything else in Cali. Feh.