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Check for loose vacuum hoses or loose wiring. The issue could be electrical in nature or from the vacuum hoses. If you experience rough idling before it stalls then your idle air control valve may be dirty or is faulty.
You have 2 faults going on this is common failure patter a idle air control and egr open, the 02 sensor was not at fault it was reporting the engine condition and had nothing to do with the stalling listen to the engine you may find a vacuum hose rupture follow it along the pcv valve you mainly have a vacuum leak or a open egr
If you can "hear" a vacuum leak then the performance of the car would be greatly affected and the engine would idle much higher than normal. Normal idle speed is around 800-1000 rpm, Check you dash tachometer. If you have a vacuum leak the idle will go up to 1200-1500 rpm.
There are lots of places beside hoses that can leak vacuum such as the EGR valve or around intake manifold. But check that rpm's first to confirm what you are hearing is a vacuum leak.
You can also purchase a vacuum gauge form your local auto parts store. they cost around $20.00+. The gauge should read a steady 15-20", if less, then a leak is indicated
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