my BMW X5 G05 (2019-2024) stalls when idling what could be wrong

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Clean Throttle Body

• Remove the air intake duct using a socket set.
• Use throttle body cleaner and a soft cloth to clean the throttle body interior.
• Reassemble the air intake duct and reconnect any sensors.
• Torque screws to manufacturer specifications.

3. Test and Replace Idle Air Control Valve

• Locate the idle air control valve (IAC) on the throttle body.
• Disconnect the electrical connector and remove the IAC using a socket set.
• Inspect the valve for carbon buildup; clean or replace as necessary.
• Reinstall the IAC and reconnect the electrical connector.

4. Check Fuel System

• Use a fuel pressure gauge to check the fuel pressure at the fuel rail.
• If pressure is low, inspect the fuel pump and fuel filter for issues.
• Replace the fuel filter if it is clogged or dirty.

5. Inspect Vacuum Lines

• Visually inspect all vacuum lines connected to the intake manifold.
• Replace any cracked or broken vacuum lines.
• Recheck for any air leaks after securing the new lines.