I have a weird problem while driving where sometimes the rpms will drop when I'm trying to slow down and push on the brake. It'll drop and fluctuate between 200 and 700. It even happens when the car is warmed up and I've driven a while and idk what could be causing it. Does anyone know how I can fix this?

 

throttle cable..

 

Try cleaning the IACV.

 

might be a loss of power maybe from alt. but idk