idle sounds like a carb
 

hello there... for some reason in the last week my truck has been idling rough. when its idling it sounds like it has a big block with a carb in it. its never done this before but i assume that something is wrong. and the other thing is that its been hauling ass.... what i mean is that when i mash the pedal it acelerates way faster than it normaly does... i know it sounds weird but i need help please respond?

probably a bad throttle position sensor or iac the tps you just have to replace but you can clean the iac