threw code P0420 bad cat

[CanadianEh48]

so the secondary O2 sensor is only to check the functionality of the cat, and has nothing to do with A/F ratios?

any awful smell from not running a Cat?

 

[finch13]

No to #1.

Sort of to #2... it's not fully gone yet, it's just "below efficiency" as the code says. Once in a while it'll give off a good old rotten egg smell and a puff of black smoke.

 

[CanadianEh48]

what ive really wanted to ask is WHERE did you get those rims? i know you wont tell, but im absolutely in love with them

 

[finch13]

what ive really wanted to ask is WHERE did you get those rims? i know you wont tell, but im absolutely in love with them

Secret super generic wheels

 

[CanadianEh48]

super sexy cuz it has exposed lugs, but its ment for a 4x114.3 hub. no fugly extra holes

 

[CanadianEh48]

so now my car is in some sort of limp mode? wont rev over 4k rpm

 

[finch13]

What exactly did you do? High flow cat? Test pipe?

Did you **** with the primary O2 sensor in the header or the second sensor on the cat? Only the primary should put it into limp mode. I believe the accessory/radio fuse is the one that resets the ECU... if not, disconnect the negative battery cable for a minute or so.

 

[CanadianEh48]

i havent touched anything yet. im planning on disabling the secondary O2 tmrw. so reset the ecu and it should take it out of limp mode?

 

[finch13]

Well usually there's a CEL involved with limp mode. I think it's an entirely different problem.

 

[CanadianEh48]

reset the ECU and took it for a 20 min drive. rolled through the gears a few times. VTEC seems to kick in and out above 4500rpm...no CEL as of yet, but itll show up soon. vtec solinoid? yes my oil is topped up and all that