[Reverse2057]

So I was backing out of a parking space a few days ago, then when shifting from reverse into drive my car suddenly stalled, radio still worked but the engine was out. So I put my car into park, turn the key all the way off, then start my car again, and it cranks for a few seconds longer than normal before starting up again. It happened once more doing the same thing, backing out of a parking space and putting the car in drive, but I've listened closely and I feel like it wants to die at times however it never has. In the past I panicked a little and gave it some gas right as I'm shifting into drive from reverse just to see if that helps keep it from dropping in rpm's.

I've also recently just replaced the starter and battery and the car has had no trouble with that since. I've also noticed sometimes after having just turned on the car and I'll be sitting at a light or stop sign, the car will sort of "pulse" on its rpm's every now and then.

Do you think this is my IAC going bad?

Will I need to replace that or is there something else amiss?

Money is not something I have a lot of so I'm hoping this is a simple fix I can manage at home. I also am not 100% car savvy nor do I have a whole lot of tools to work with, but I managed to replace the starter okay.