my Ford Explorer is stalling while driving what could be the cause

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

597 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix stalling issues in Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening any components.

Symptoms

•Engine stalling unexpectedly while driving
•Rough idling when at a stop
•Check engine light illuminated
•Difficulty starting after stalling
•Loss of power during acceleration
•Increased fuel consumption

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored fault codes.
2
Inspect the fuel system for proper fuel pressure using a fuel pressure gauge.
3
Check the condition of the spark plugs and ignition coils for wear or damage.
4
Test the mass airflow sensor (MAF) and throttle position sensor (TPS) for proper operation.
5
Inspect the air intake system for any blockages or leaks.
6
Examine the battery and alternator to ensure proper electrical supply.

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
•Line wrenches

Parts Required

•Spark plugs
•Ignition coils (if worn)
•MAF sensor (if faulty)
•TPS (if faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored fault codes.
2
Inspect the fuel system for proper fuel pressure using a fuel pressure gauge.
3
Check the condition of the spark plugs and ignition coils for wear or damage.
4
Test the mass airflow sensor (MAF) and throttle position sensor (TPS) for proper operation.
5
Inspect the air intake system for any blockages or leaks.
6
Examine the battery and alternator to ensure proper electrical supply.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the battery to ensure safety during repairs.
Allow the engine to cool before starting work.

2. Fuel System Inspection

Tools Required: Fuel pressure gauge, line wrenches
Check fuel pressure at the fuel rail:
1. Connect the fuel pressure gauge to the Schrader valve on the fuel rail.
2. Turn the ignition key to the "ON" position (do not start the engine) and check the pressure reading. It should be within manufacturer specifications.
3. If the pressure is low, inspect the fuel pump, filter, and lines for blockages or leaks.

3. Ignition System Check

Tools Required: Spark plug socket, multimeter
Inspect and replace spark plugs:
1. Remove the ignition coils from the spark plugs.
2. Use a spark plug socket to remove each spark plug and inspect for wear or carbon buildup.
3. Replace any damaged or worn spark plugs with OEM specifications.
4. Reinstall the ignition coils securely.

4. Sensor Testing

Tools Required: Multimeter
Test the MAF and TPS:
1. Disconnect the electrical connectors from the MAF and TPS.
2. Use a multimeter to measure the voltage output of each sensor while moving the throttle.
3. Compare the readings to manufacturer specifications and replace any faulty sensors.

5. Electrical System Inspection

Tools Required: Multimeter
Check the battery and alternator:
1. Use a multimeter to measure battery voltage; it should be around 12.6 volts with the engine off and around 14.4 volts with the engine running.
2. Inspect battery terminals for corrosion and ensure tight connections.
3. If the alternator is not charging properly, replace it as needed.