i don't know why, but this week when i start up the car in the morning, first it revved up to 1750rpm in idle, after 30 sec i start to drive, the car seems to stall a little bit at idle and not revving at a constant level...

however when it gets warmed up, the problem is gone, wondering what happened exactly...

is it my battery almost done? i never had such issues b4

 

Just Let It Warm Up On It's Own,don't Rev It.wait Like A Minute And Then Drive Off ,but Don't Gun It Till It's Warmed Up!(if You Ever Gun It)it's Not Good To Leave It On Idle For Long!