how to fix my Ram 1500 DT (2019-Present) if it is stalling at stop lights

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is off.
• Disconnect the battery to prevent electrical shorts during repairs.

2. Clean the Throttle Body

• Tools Required: Throttle body cleaner, soft cloth, screwdriver.
• Remove the air intake duct connected to the throttle body.
• Spray throttle body cleaner into the throttle body while opening the throttle plate manually.
• Wipe out the inside with a soft cloth to remove carbon deposits.
• Reinstall the air intake duct securely.

3. Check Fuel Pressure

• Tools Required: Fuel pressure gauge, safety glasses, shop towels.
• Locate the fuel rail and connect the fuel pressure gauge.
• Turn the ignition on (do not start the engine) to check the fuel pressure reading.
• Compare the reading to manufacturer specifications; if low, check the fuel pump and filter.
• Disconnect the gauge and ensure there are no fuel leaks before starting the engine.

4. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench.
• Remove the engine cover if necessary to access the ignition components.
• Check spark plugs for wear or damage; replace if necessary (gapping according to manufacturer specifications).
• Test ignition coils with a multimeter; replace any faulty coils.
• Reinstall all components securely.

5. Clean or Replace the Idle Air Control Valve

• Tools Required: Socket set, cleaning spray.
• Locate the IAC valve on the throttle body.
• Remove the IAC valve and clean it with an appropriate cleaner.
• If cleaning does not resolve issues, replace the IAC valve with a new one.
• Reinstall the IAC valve and ensure all connections are secure.