A: During the inspection of the throttle, verify that the throttle linkage operates smoothly. To remove any build-up, remove the air intake duct and inspect the bore. If it is dirty, clean it using a solvent or carburetor cleaner that is safe for oxygen sensor systems and catalytic converters. To begin the removal process, the cable should be disconnected from the negative battery terminal. The air intake duct and resonator should be removed. The throttle body connector(s) should be disconnected, along with any throttle body hoses and vacuum hoses.