Release the Cancel button once the LED lights come on. This resets both the printer and the NVRAM together. Press and hold the Reset button near the back of a 5P or 6P printer as you turn on the power. Holding it for less than 20 seconds resets the printer only.
Once the throttle body is exposed, spray the throttle-body cleaner inside the air duct, and use the brushes to gently dislodge the dirt, gum and varnish that are present. Note: Be very careful not to let the thin, plastic spray nozzle (or anything else!) fall into the throttle-body opening.
a throttle body is the mechanism that is directly hooked up to the gas pedal. when you push on the gas you open up the throttle body, it then lets more air into the engine making you accelerate. I can't tell you if you'll really need it cleaned because I honestly don't know how much it would affect your performance.