Does the mass air sensor effect the idle on 2004 chevy colorado?
It could. You can buy mass air sensor cleaner (spray can) at any auto parts store. I would also suggest cleaning the throttle body while you are at it as this will also help.You want to use deep sea foam (white & red can) also at the auto parts store. Very simple to do just follow the directions on the can. Deep sea foam can also be run threw the gas tank. I did notice a difference after use with increase of gas mileage and better idle.