need help o2 sensor

[titanfan12]

will the o2 sensor cause my 99 gtp sc to stall? (note i have bad mpg right now as well)
because im running out of options right now

[mikedinthecity]

stalling usually is mass air flow or even a weak fuel pump. o2 would be hard to believe it could cause a stalling issue. could always try to unplug the o2 see how it runs. have u had the engine light scanned for codes? i know the mass air flow and the o2 get their power from the same fuse, maybe the fuse is blown its under the hood on pass side of engine compartment.

[BillBoost37]

If your O2 isn't heating up, it will cause the car to run horribly when the switch happens from ICM to PCM. You can also see this if you are watching the O2, based on the mV staying super low.

[titanfan12]

well i have replaced the maf sensor and yes ive scanned it many times with no codes being thrown
ive also replaced many things and my car just stalls whenever but its usaully in the first 5-15 minutes of running

[GP Guy 07]

For a 02 sensor a live scan is needed to see in real time data.To see if it's lazy or not,but if the 02 is junk you'll know the car will run like crap.

[titanfan12]

i actually have another code reader that does real time and what would or should i say what should it look like

[GP Guy 07]

Like long peaks^^^ a steady stream of them.If you need to see them,look on youtube.Thats how I found out mine were shot.Hope that helps.