2.7 Engine acting up, need help

so my yota has been sitting for about 2 months cuz of front end problems and now i finally got it on the road, she ran mint the first drive and now she will sit and idle for a bit then she starts sputtering could it be the gas is to old? any ideas

 

Any codes? Probly gas if there aren't any codes, maybe fuel filter. Put an additive like heat in and see if it fixes it. Make sure you fill the tank when you put any additives in.

 

Does it matter whether its cold or hot?
Does it run fine when not idling? If so, it could be the TPS.

 

itll run fine right at start up then once she gets warm it starts to sputter, i did de grease the engine yesterday too and wasnt until i did that she started acting up

 

Probably got something wet.