How to Replace the Throttle Body in a Honda Accord

Remove the Throttle Body

• Remove the negative cable from the battery. Take the air intake tube from the throttle body. Drain at least half the coolant from the cooling system so that the level of coolant is below the throttle body.

• Take off the coolant hoses that run to the throttle body. Clamp off the hoses before removing them to prevent leakage.

• Label all the vacuum hoses that run to the throttle body, then remove them. Disengage the wiring connectors on the throttle body. Label the throttle control cable (and/or the accelerator cable) and then disconnect it.

• Take off the nuts that hold the throttle body to the intake plenum. Release the nuts a half-turn at a time in turn so that the pressure is evenly released.

• Lift the throttle body from the intake plenum. Pull the gasket out and discard it.

• Clean the gasket mating surfaces thoroughly. Use a plastic scraper to remove old gasket material, dirt and debris.

Install the Throttle Body

• Position a new gasket correctly on the plenum. Set the throttle body over the studs on the plenum. Torque the nuts in several passes, using an alternating sequence, to 16 foot pounds.

• Reconnect the throttle control cable and (/or the accelerator cable). Reconnect the vacuum hoses and the wiring, paying careful attention to the labeling.

• Reconnect the coolant hoses. Fill the cooling system to the proper level with the suggested type and mix of coolant.

• Put the air intake ducts in place. Reconnect the negative battery cable.

• Start the engine. Check for leaks. Let the engine run for several minutes, then turn off the ignition. Test the coolant level and top off as needed.