Why is my 2020 Ford Explorer experiencing engine stalling?

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

728 words

Problem Statement

Learn how to diagnose and repair engine stalling issues in the 2020 Ford Explorer with step-by-step instructions and required tools.

Affected Component

engine

Estimated Time

2-4 hours

Symptoms

•The engine unexpectedly shutting off while idling or during acceleration.
•Difficulty restarting the engine after it stalls.
•Unusual sounds from the engine before stalling (like sputtering).
•The check engine light may illuminate on the dashboard.

Diagnostic Steps

1
Visual Inspection: Check for any obvious issues such as loose wires, damaged vacuum lines, or fluid leaks.
2
Listen for Unusual Noises: Pay attention to any odd noises from the engine when running.
3
Check for Diagnostic Trouble Codes (DTC) using an OBD-II scanner.
4
Evaluate Fuel System: Check fuel pressure and inspect the fuel pump, fuel filter, and fuel lines.
5
Inspect Ignition System: Check spark plugs and ignition coil for proper function.
6
Evaluate Air Intake System: Inspect air filter, MAF sensor, and throttle body.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II Scanner
•Fuel pressure gauge
•Multimeter
•Spark plug socket
•Basic hand tools (screwdrivers, pliers)

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Diagnosis and Repair of Engine Stalling in a 2020 Ford Explorer

Step 1: Initial Inspection

Visual Inspection: Check for any obvious issues such as loose wires, damaged vacuum lines, or fluid leaks.
Listen for Unusual Noises: Pay attention to any odd noises from the engine when running.

Step 2: Check for Diagnostic Trouble Codes (DTC)

Tools Required: OBD-II Scanner
Procedure:
1. Connect the OBD-II scanner to the vehicle's diagnostic port (usually located under the dashboard).
2. Turn the ignition to the "On" position without starting the engine.
3. Retrieve any stored DTCs that could indicate the source of the stalling issue.
4. Record the codes for further analysis.

Step 3: Evaluate Fuel System

Tools Required: Fuel pressure gauge, multimeter
Procedure:
1. Check Fuel Pressure: Connect the fuel pressure gauge to the fuel rail (refer to the service manual for the specific connection points).
2. Turn the ignition to the "On" position without starting the engine and record the fuel pressure reading.
  - Compare this reading against the manufacturer specifications (typically between 50-60 psi).
3. If the pressure is low, inspect the fuel pump, fuel filter, and fuel lines for clogs or failures.

Step 4: Inspect Ignition System

Tools Required: Spark plug socket, multimeter
Procedure:
1. Remove a spark plug and inspect for wear or fouling.
2. Use a multimeter to check the resistance of the ignition coil (should be within manufacturer specifications).
3. Test for spark by connecting a spark plug to the ignition coil and grounding it while cranking the engine.
4. If there is no spark, consider replacing the ignition coil.

Step 5: Evaluate Air Intake System

Tools Required: Basic hand tools (screwdrivers, pliers)
Procedure:
1. Inspect the air filter for clogging and replace if necessary.
2. Check the Mass Air Flow (MAF) sensor for dirt or damage. Clean it with MAF sensor cleaner.
3. Inspect the throttle body for carbon buildup and clean if necessary.

Step 6: Scan for Additional Issues

If DTCs indicate issues with the crankshaft position sensor or camshaft position sensor, these components should be tested.
Tools Required: Multimeter
Procedure:
1. Check the sensors for proper signal output while cranking the engine.
2. Replace faulty sensors as necessary.

Repair Instructions

Repairing Fuel System Issues

Fuel Pump Replacement:
- Disconnect the negative battery terminal.
- Relieve fuel pressure from the system.
- Remove the fuel tank as per service manual instructions.
- Replace the fuel pump and reassemble.
Fuel Filter Replacement:
- Disconnect the negative battery terminal and relieve fuel pressure.
- Locate the fuel filter and replace it as per your vehicle’s service manual.

Repairing Ignition System Issues

Ignition Coil Replacement:
- Disconnect the negative battery terminal.
- Remove the coil pack(s) as per the service manual.
- Install the new ignition coil and reconnect wiring.
Spark Plug Replacement:
- Remove old spark plugs using a spark plug socket.
- Gap new spark plugs to specifications and install.

Repairing Air Intake System Issues

Replace Air Filter:
- Open the air filter housing and replace the old filter with a new one.
Clean MAF Sensor:
- Remove the MAF sensor from the air intake.
- Spray MAF cleaner on the sensor and let it dry before reinstallation.
Throttle Body Cleaning:
- Remove the throttle body from the intake manifold.
- Clean using throttle body cleaner and soft brushes.

Final Steps

Reconnect the battery and clear any DTCs using the OBD-II scanner.
Test drive the vehicle to ensure the stalling issue is resolved.
Monitor for any reoccurrence of symptoms or warning lights.

Conclusion

Engine stalling issues in the 2020 Ford Explorer can stem from various sources, including fuel system failures, ignition system malfunctions, or air intake problems. Proper diagnostics must be followed to ensure accurate repairs. If problems persist after following these steps, consider consulting a professional technician for further assistance.