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.
Remove the throttle position sensor from the throttle body. 7. Remove the throttle body mounting screws and remove the throttle body assembly. Discard the old gasket and install a new gasket between the throttle body and manifold during installation. 8. Match the new throttle body to the old throttle body making sure that sensors, hoses and cables are all routed correctly to the new throttle body and that it mounts correctly to the intake manifold. 9.