my idle lowers and the car beings to stutter sometimes when the car begins to slow down or when its idling at a stop.

SOMETIMES, my battery light flashes once or twice, but never stays on. just flashes.

any idea what the problem might be?

 

i just went through something similar on my car but never got a battery light. i got a used throttle body with a tps sensor since mine was bad. you need a new gasket and bolt it up. basically i would just do everything that you see in every other idle topic. clean iacv and fitv. maybe your alternator is not giving enough juice to your battery