my Genesis G70 stalls when coming to a stop what could be wrong

Solution

1. Preparation

• Gather tools and parts necessary for the repair.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Clean Throttle Body

• Remove the air intake duct connected to the throttle body.
• Use throttle body cleaner and a soft cloth to clean the throttle plate and body thoroughly, ensuring no residue remains.
• Reattach the air intake duct securely.

3. Inspect and Clean the IAC Valve

• Locate the idle air control valve, typically situated on the throttle body.
• Remove the IAC valve from its mount.
• Clean the valve and its passages with a suitable cleaner to remove any carbon deposits.
• Reinstall the IAC valve with the specified torque settings.

4. Check and Replace Vacuum Lines

• Visually inspect all vacuum lines for cracks, wear, or disconnections.
• Replace any damaged vacuum lines with OEM parts to ensure proper sealing and function.

5. Test and Adjust Fuel Pressure

• Connect a fuel pressure gauge to the fuel rail.
• Start the engine and monitor the fuel pressure; it should match the specifications in the service manual.
• If pressure is low, replace the fuel pump or filter as necessary.