QUOTE (Skrilla @ Jan 6 2010, 12:14 PM)
I drove on the highway for over an hour to see my friend. The light still wont go away but I did not erase the code becuase I dont know how. How do I erase the code??? Do you think I should drive again for like an hour and erase the code after I figure out how to erase the code or should just erase the code as soon as I find out how to and not drive for over an hour again???[/b]
Go to autozone and ask them to erase your code. Or disconnect the battery for 15 minutes works also. But disconnecting the battery will also erase other settings like radios and stuff.
QUOTE (Skrilla @ Jan 6 2010, 12:20 PM)
Would I have to remove the CAT comletely to have this work??[/b]
NO. It's very easy to do. The whole idea is that the rear O2
sensor is what monitors whether the CAT works or not. If the CAT is working, then under "normal" driving conditions (i.e. not accelerating hard or something like that), the rear O2
sensor should NOT switch. This is because the CAT has successfully converted the unwanted species to CO2
and whatever else so the reading is constant (around 0.75mV or so). If your CAT is dead, then unwanted species like CO
, hydrocarbon, NOx
will pass thru, which causes the O2
sensor to switch between 1 and 0 volt output. The idea of the non-fouler trick is to shield the O2
sensor enough so that it doesn't get a full reading of the exhaust. In other words, it is damping the response of the sensor.
All you need to do to make it work is buy a non-fouler, screw the O2
sensor into it and then screw the non-fouler into the exhuast port where the O2
sensor was. Sometimes, one non-fouler is not good enough. So some instruction have you first drill out one non-fouler. Then put the O2
sensor in that. Then put this non-fouler in the other non-fouler and then screw the entire unit into the exhaust port. Note that you only do this non-fouler thing for the O2
sensor AFTER the catalyst. There should be 2 O2
sensors AFTER the TWO cats. But you only need to do it for the bank that's throwing the code.
Moral of the story: if you go with double non-fouler on each O2
sensor, then you need 4 non-foulers. You need to remove the two post-CAT O2
sensor and then install the non-foulers. Very easy to do and is very effective. People often do this after they delete the CAT so that there's no CEL
. On post-2006 cars though, I think the emission checking system in the car has advanced so that this will throw off other codes.