O2 sensor ? on 2008 gt
#1
O2 sensor ? on 2008 gt
I noticed there are 3 sensors in the mid pipe. There is one on the passenger side pipe right above the converter and one mounted in the side of each converter. I need to know if the ones that are mounted in the converters are neccessary? or are they just there to throw the check engine light if the converters stop up? My 03 mustang had two upstream sensors that give the computer the readings for the engine to run right and two down stream sensors that was just for throwing codes in case the converters clogged up. The reason I'm wanting to know is because I'm getting the converters removed instead of buying an off road pipe. If I can just leave those two out and throw some MIL eliminators on them to shut the light off I will. If the car needs them to run right though I'll get the man to weld new bungs in for them.
#2
The upstream 02 sensors are inputs to the EEC for adj. the fuel mixture. The downstream 02 sensors are make sure the cats are working correctly. You can't just unplug any of them, but you can pull them further out of the exhaust stream (effectively sensing less HCs) or use a tune to turn them off.
#3
The sensors that are mounted in the converters are the downstream sensors right? From the pictures I've seen I can see the upstream sensor on the passenger side but I don't see one of the drivers side. Is the drivers side upstream sensor mounted in the exhaust manifold? If the sensors in the converters are the downstream sensors I'll leave them out. I can put a set of MIL eliminators on them and tie them out of the way.
#6
That's what I'll do then. I know the check engine light will come on when the converters are not present but the car will still run right correct? I'll get the tune but I need to use the car for a while until I can get the tune. I know the check engine light will come on but I'm ok with that. I just don't want to remove the cats if the car will not run right without the tune???
#7
#8
No, they do a LOT more than that. The rear sensors generate a signal that roughly follows the alternating signal (from lean to rich) of the front sensors, and the PCM monitors the variation and amplitude of the signals to monitor the effectiveness of the cats.
If you live in an area where emission OBDII inspections are not performed, you can turn off the rear sensors in the tune, and remove them or do what you want with them.
Otherwise if you must retain rear O2 sensors, there are simple circuits and techniques that can be used to "simulate functional cat converters", but you still need the rear sensors somewhere to accurately do this.
If you live in an area where emission OBDII inspections are not performed, you can turn off the rear sensors in the tune, and remove them or do what you want with them.
Otherwise if you must retain rear O2 sensors, there are simple circuits and techniques that can be used to "simulate functional cat converters", but you still need the rear sensors somewhere to accurately do this.
#10
No, they do a LOT more than that. The rear sensors generate a signal that roughly follows the alternating signal (from lean to rich) of the front sensors, and the PCM monitors the variation and amplitude of the signals to monitor the effectiveness of the cats.
If you live in an area where emission OBDII inspections are not performed, you can turn off the rear sensors in the tune, and remove them or do what you want with them.
Otherwise if you must retain rear O2 sensors, there are simple circuits and techniques that can be used to "simulate functional cat converters", but you still need the rear sensors somewhere to accurately do this.
If you live in an area where emission OBDII inspections are not performed, you can turn off the rear sensors in the tune, and remove them or do what you want with them.
Otherwise if you must retain rear O2 sensors, there are simple circuits and techniques that can be used to "simulate functional cat converters", but you still need the rear sensors somewhere to accurately do this.