hello so recently i found out something weird. whenever i roll down my windows or roll them up.. i noticed a change in my rpms. it goes up whenever i do it. i was wondering what could be the problem? battery? alternator? also sometimes when i start up my car, right when i click the ignition and start it up it seems like it doesnt have enough energy to start or something... what could be the issue? thanks

 

Your battery is probably starting to go

 

dammm really? i think i changed it like 1 1/2 years ago . ACdelco battery. what battery you recommend?

 

Get them both tested.

 

Do you have a multimeter?