Disconnect the air intake duct from the throttle body. Open the throttle plate and check the area for residue build-up. If it's dirty, clean it with solvent or carburetor cleaner. Make sure that the cleaner is safe for use with catalytic converters and oxygen sensors. Disconnect the cable from the negative battery terminal. On V6 engines, pinch off the two coolant hoses to the throttle body. If you don't have tools suitable for doing this, drain the engine coolant until the level in the cooling system is lower than the throttle body. Remove the air intake duct. It can simply be disconnected from the throttle body and moved aside on some models. Disconnect the electrical connector from the throttle body. On 2004 and later V6 models, also disconnect the MAP sensor wiring. Disconnect any remaining coolant or air hoses from the throttle body. If you're working on a 2004 or later V6 model, remove the wiring harness bracket bolt from the throttle body. Remove the throttle body mounting nuts or bolts and carefully lift off the throttle body. Remove the 0-ring type throttle body gasket (four-cylinder engine). The manufacturer recommends replacing it with a new one regardless of its condition. V6 models use a different type of gasket than the four-cylinder engine-if it sticks, carefully remove all traces of gasket material. Discard the gasket; it should be replaced with a new one. Cover the intake manifold opening with a clean shop towel. Installation is the reverse of removal. Be sure to use a new gasket and tighten the throttle body fasteners. If you're working on a 2004 or later V6 model, perform the idle learn procedure. If you're working on a four-cylinder or 2003 or earlier V6 model, turn the ignition key to the Run (not Start) position for one minute, without depressing the accelerator pedal; this is necessary for the PCM to "learn" the position of the throttle plate.
