my Jaguar XF X260 (2015-2024) stalling when I come to a stop what's the issue

Symptoms

• Engine stalls when coming to a complete stop
• Rough idle before stalling
• Check engine light illuminated
• Increased fuel consumption
• Unusual engine noises (e.g., sputtering)

Diagnostic Steps

1. Scan the vehicle's OBD-II system for any error codes.
2. Check the engine oil level and condition.
3. Inspect the air filter for clogs or dirt.
4. Examine the throttle body for carbon buildup.
5. Test the fuel pressure using a fuel pressure gauge.
6. Check the idle air control valve (IACV) for proper operation.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool down.

2. Inspect and Clean Components

• 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 surrounding area.
  • Reinstall the intake duct securely.

• Idle Air Control Valve (IACV):

  • Locate the IACV (refer to the vehicle's service manual for exact location).
  • Disconnect the electrical connector and the vacuum hose.
  • Remove the IACV from the intake manifold.
  • Clean the IACV with appropriate cleaner and reinstall it.

3. Check and Replace Fuel Filter (if necessary)

• Locate the fuel filter (usually near the fuel tank).
• Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
• Disconnect the fuel lines (use a line wrench to avoid damage).
• Replace the fuel filter with a new one, ensuring correct orientation.
• Reconnect fuel lines and fuse.

4. Reassemble and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear any stored error codes.
• Start the engine and let it idle for a few minutes to check for improvements.