my Acura MDX YF3 (2022-Present) stalls when I come to a stop what's wrong

Symptoms

• Engine stalling at idle or when coming to a stop
• Check Engine Light (CEL) may be illuminated
• Rough idle or fluctuating RPMs before stalling
• Potential loss of power during acceleration
• Engine may restart after a brief moment or may require a restart

Diagnostic Steps

1. Scan for Error Codes:

   • Use an OBD-II scanner to retrieve any diagnostic trouble codes (DTCs) that might indicate the cause of the stalling.
   • Note any codes related to the engine, fuel system, or idle control.

2. Check Fluid Levels:

   • Inspect the engine oil, transmission fluid, and coolant levels. Low fluid levels can cause engine performance issues.

3. Inspect Components:

   • Check the throttle body for carbon buildup or obstructions.
   • Inspect the air filter for clogging.
   • Examine the fuel system components (fuel pump, fuel filter, injectors) for proper operation.

4. Test with Multimeter:

   • Verify the battery voltage and charging system if the engine is struggling to maintain idle.
   • Test the throttle position sensor (TPS) and mass airflow sensor (MAF) for proper voltage and signal output.

Repair Instructions

1. Replace Air Filter (if necessary):

   • Tools Required: Socket set, flat-head screwdriver.
   • Estimated Time: 15-30 minutes.
   • Steps:
     1. Open the hood and locate the air filter housing.
     2. Remove the clips or screws securing the housing cover.
     3. Take out the old air filter and inspect it for dirt and debris.
     4. Install the new air filter and secure the housing cover.

2. Clean Throttle Body (if necessary):

   • Tools Required: Throttle body cleaner, soft cloth, socket set.
   • Estimated Time: 30-45 minutes.
   • Steps:
     1. Disconnect the negative terminal of the battery.
     2. Remove the air intake duct to access the throttle body.
     3. Use throttle body cleaner and a soft cloth to gently clean the throttle plate and surrounding areas.
     4. Reassemble the intake duct and reconnect the battery.

3. Check and Replace Fuel Filter (if necessary):

   • Tools Required: Socket set, fuel line disconnect tool, safety glasses.
   • Estimated Time: 1-2 hours.
   • Steps:
     1. Relieve fuel system pressure.
     2. Use the fuel line disconnect tool to detach the fuel lines from the filter.
     3. Remove the old fuel filter and install the new one, ensuring proper orientation.
     4. Reattach the fuel lines and check for leaks.

4. Inspect and Replace Spark Plugs (if necessary):

   • Tools Required: Spark plug socket, torque wrench.
   • Estimated Time: 1-2 hours.
   • Steps:
     1. Remove the engine cover if applicable.
     2. Using the spark plug socket, remove the old spark plugs.
     3. Check the gap on the new spark plugs before installation.
     4. Install the new spark plugs and torque them to the manufacturer’s specifications.
     5. Reinstall the engine cover.

Safety Warnings

• Always disconnect the negative battery terminal before performing any repairs to avoid electrical shock.
• Wear safety glasses and gloves when working with fuel systems and cleaning agents.
• Ensure the vehicle is on a flat surface and properly supported when working underneath the vehicle.