please help me find problem (P0131, P0171, P0300)

[Ryan53090]

i have a 2010 Chevy Aveo LT 1.6L
starting a couple weeks ago i started getting codes: P0131, P0171, P0300 (went away after i changed out spark plugs),
i changed my exhaust manifold gasket,
replaced the Air filter before the MA,
and now i cant get rid of P0131, P0507, and a P0106 that doesn't show up every time.

i have OBDwiz, is there specific live data i should pay attention to that can help find where my problem is?

my car when started:
RPMs jump up to about 3k then descends down to around 1k, lingers for a few seconds then starts to surge
when stopped if i don't push on the gas a little bit the engine will stall.
while going fast it feels like it lost a lot of power but as i'm going fast it doesn't stall,
also feels like its taking a long time to change gears.
both of my o2 sensors are working,
i tried spraying throttle body cleaner to locate if there is a vacuum leak but cant find one,
please any help would be greatly appreciated.

[avguy]

... both of my o2 sensors are working, ...

The P0131 code is telling you the upstream O2 is not working correctly. But it could also be the wiring or connectors in that circuit as well as the sensor.

[Ryan53090]

i've checked the wiring of all connectors, all the sensors are working fine. viewing live data confirms o2 sensors are working, today i changed the battery since i noticed the one i had in before was starting to expand on the sides. i think there is a vacuum leak on the valve cover, ill be replacing it tomorrow, will update after i changed it out.

[petrified.rabbit]

This is symptomatic of a vacuum leak or a throttle plate that is not fully closed.

Check the vacuum lines and the PCV system. Also look for cracks in the intake tube and verify the throttle opens and closes cleanly.