Hesitation on maxima

i got a 2000 maxima and since 2-3 weeks I got the mil indicator light on . I have not check with a scan tool so From a previous checK .it was say the O2 sensor was lean. My car start having problems when I'm driving and I make an stop , when I try to advance again my car doesn't respond quickly and i have too give more gas and the it start bruscally. It happen also on reverse. the driven is also hard. Could be it related to O2 sensor? When O2 sensor is bad.Are those the symptoms?

...Are those the symptoms?

Mileage, Tuneups???

With given info, Multiple possibilities. Cheapest way is to go and let smbdy read codes -or- purchase code-reader...

This 'tester' tells all the time what is happenin, for -96 or later obd-II engines, plug-in. Check out: http://www.scangauge.com/

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