1. Disconnect the negative battery cable. The BMW 325 battery is located in the trunk. Let the vehicle cool off for at least 30 minutes prior to beginning procedure.
2. Remove the two screws mounting the air box assembly on the right side of the engine bay. Removing the air box assembly will allow you easier access to the heater control valve. Remove the clamps connecting the air intake hose and set the box and hose aside
3. Disconnect the electrical module from the base of the valve. Use the flat-head screwdriver to remove the clamps holding the upper and lower valve hose. Make note of their position; the upper and lower hoses cannot be swapped during installation. Clamp off the hoses to minimize leakage and prevent contaminants from entering the system.
4. Use the torx screwdriver to remove the three screws mounting the heater control valve, and then remove the valve.
5. Place the new valve in its spot and attach the screws to mount it. Remove the clamps and reconnect the upper and lower hose to the proper location on the valve. Replace the electrical connection to the valve and reinstall the air box assembly.
Saturday, May 4, 2013
How to Install a 1992 BMW 325 I Heater Control Valve
