For 1990-2009 cars

### Removal Procedure

1. Drain the cooling system. Refer to Cooling System Draining and Filling .
2. Remove the throttle body heater inlet hose from the throttle body.
3. Remove the throttle body inlet hose from the vapor vent pipe.

### Installation Procedure

1. Install the throttle body inlet hose to the vapor vent pipe.
2. Install the throttle body heater inlet hose to the throttle body.
3. Refill the cooling system. Refer to Cooling System Draining and Filling .