Q: How to remove and install the air cleaner assembly on Ford Ranger?
A: Disconnect the negative cable from the battery for both 1993 and 1994 models. Loosen the hose clamps on the air cleaner outlet tube assembly. Remove the tube from the throttle body and the air filter box. Cover the throttle body inlet to prevent the entry of foreign matter. Disconnect the vacuum lines at the temperature sensitive vacuum motor in the air filter box cover. Disconnect the electrical connector at the Mass Air Flow (MAF) sensor. Remove the screws securing the air filter box assembly upper half. Label and disconnect the two small hoses from the upper case half and remove the upper half and the air cleaner filter. To remove the remainder of the assembly, squeeze the protrusions on the air cleaner hot air tube and disconnect the tube from the air filter box. Remove the bolt securing the air cleaner intake tube assembly to the air cleaner intake deflector next to the radiator panel. Remove the intake tube from the lower half of the air filter box. Remove the screw securing the lower half of the air filter box to the mounting bracket. Remove the lower half of the air filter box. Installation is the reverse of the removal procedure. Tighten all hose clamps and fillings securely. For 1995 and later models, disconnect the negative cable from the battery. Disconnect the crankcase ventilation hose on V6 models. Disconnect the electrical connector at the Mass Air Flow (MAF) sensor. Disconnect the electrical connector at the Intake Air Temperature (IAT) sensor (if equipped). Loosen the air filter box clamps at the engine air cleaner and the throttle body and remove the housing. On later models, to remove the air filter housing duct, loosen and remove the clamps at both ends of the duct. Disconnect all electrical connectors and hoses, and lift the duct from the vehicle. Installation is the reverse of the removal procedure. Tighten all clamps and fittings securely.