i ordered an o2 simulator... i was just wandering how it worked (after cat)

 

apparently they do. Ill discover that when this weekend comes.

 

OBDII cars have two oxygen sensors to measure the amount of oxygen contained in the exhaust gas. The first sensor is located on the manifold or header and measures O2 content of the exhaust as it escapes from the cylinders. This sensor is used by the PCM to calculate fuel trims and look for combustion problems. The second oxygen sensor is located after the catalytic converter and is used only to detect the performance of the converter. The PCM does NOT use any data from the secondary O2 sensor for engine management. The PCM will set an SES (service engine soon) light (for DTC's P0140, P0141 and/or P0420) if the catalytic converter is removed, the sensor is removed, or the sensor goes bad.

The O2 simulator is a plug-in replacement for the secondary O2 sensor that will provide the PCM with a signal that emulates a healthy cat. An extremely compact circuit board (.6 x .6 inches) is molded into the end of the connector to provide the most compact and water resistant simulator on the market. This circuit provides the signal to the PCM and also simulates an o2 heater load for the more advanced PCMs.

Installs in less than 10 minutes and does not require any tools. The O2 simulator is standalone and as such does not need to be located anywhere near the exhaust system. It is further recommended that the harness connecting to the o2 simulator be coiled up and cable tied (with included cable tie) in the engine compartment away from the hot exhaust that could damage the casing of the simulator if it comes in contact with it. It also prevents obstacles in the road from catching on the harness wire if left unchecked. Some vehicles such as F-bodies with front dual exhaust have four oxygen sensors and require two simulators per vehicle.

For off-road use only.


that is off a gm website...

 

would it pass inspection?

 

So an idiot could install it and they actually work?

 

that's pretty nifty. i had just taken my engine service bulb out so it wouldn't light up.maybe ill get that simulator so that if my engine has a real prob, ill know it.

 

WHERE IS A GOOD PLACE TO GET THE SIMULATOR?

 

www.o2simulator.com

Their tech support is really good, too...

 

none of this topic makes sense... wtf.

 

does it work, yeah, along with the heater wire resistor. I just installed mine and it corrected my cat's CEL, but i got a new CEL because i cut the heater wire to the sensor and now i need to get a simulator for that as well. I'll upate my "O2 simulator installed" thread once it comes and it's installed, bt yeah it works, and yea its easy to do. I got mine off ebay, but www.o2simulator.com works too