Need some help with my 09!

#1
Hey everyone,
I need some help with my 09 s with 180k miles. I’m having some issues with it.
ever since I got it about 2 years ago when you started it it would crank, fire and die right away but you could then crank for a bit it would fire and run fine. I had a shop look at it and say it was the alt, I didn’t do anything with it until recently I replaced the alt, and since the alt killed the battery I had to get a new battery. Well it’s still doing the same thing, only now it is idling very low and struggling to stay running. I’m not sure if it’s from the new battery or the fact it’s cold and has been sitting for the last month or so.
anyone know where I should start looking? Right now it’s only a spare car but will need it soon.
Thanks
 
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