Hollowed Cat, Check engine light

[99Dodge1500]

When I hollowed out my cat, my check engine light came on, I now it is because of the 2nd o2 sensor, but what I want to know will it affect anything if I leave it.

 

[Jeff99GS]

No it won't effect the car other than the CEL. The second O2 sensor is located after the Catalytic Converter. The whole purpose of this O2 sensor is to ensure that there is a functioning catalytic converter in the system. The way it can detect this is to make sure that there is a difference in exhaust gasses between the first O2 sensor and the second. If the same exhaust reading is detected, then the ECU knows that there is either a damaged Catalytic Converter or no Catalytic Converter at all.

You can try this Oxygen sensor extender. It is basically a way to space out the O2 sensor so that it still reads SOME exhaust gasses but it removes the O2 sensor from the direct flow of the gasses as to make the ECU believe there is a restriction in the exhaust gasses such as by a Catalyst.

This usually will get rid of the pesky CEL. They sell them all over on E-Bay

eBay Motors: O2 SENSOR EXTENDER HYDROGEN GENERATOR HHO PWM 30 AMP (item 250323096667 end time Nov-19-08 20:31:22 PST)

 

[99Dodge1500]

That makes me feel better knowing that that won't ruin anything, I will get an o2 sensor extender to get rid of that CEL.
Thanks

 

[97 4G63]

Or ..
you can just go to any auto parts store and get 2 spark plug defoulers and use that.
Just make sure you drill one out with a half inch drill bit so that o2 sensor fits in there.

 

[Defiant]

http://www.dsmtuners.com/forums/new...r-merged-11-8-removal-sensor-cel-disable.html

 

[synthetek]

Mechanical or electronic o2 eliminator or Dsmlink FTW!

http://www.dsmtuners.com/forums/newbie-forum/269679-just-threw-p0420-cel-code.html#post151270942