what could cause my Ford Explorer to stall while driving

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

655 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 engine stalling issues in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems

Symptoms

•Engine suddenly shuts off while driving
•Difficulty restarting the engine after stalling
•Loss of power steering and braking assistance
•Illuminated check engine light
•Unusual engine noises prior to stalling

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the fuel system for proper pressure by using a fuel pressure gauge.
3
Check the ignition system components including spark plugs and ignition coils for wear or damage.
4
Examine the mass air flow (MAF) sensor and throttle body for cleanliness and proper function.
5
Verify the functionality of the crankshaft position sensor and camshaft position sensor.
6
Inspect the battery and alternator for adequate voltage output.

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
•Socket set
•Multimeter
•Cleaning brush

Parts Required

•Fuel filter (if clogged)
•Spark plugs
•Ignition coils (if faulty)
•Crankshaft position sensor (if faulty)
•Camshaft position sensor (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the fuel system for proper pressure by using a fuel pressure gauge.
3
Check the ignition system components including spark plugs and ignition coils for wear or damage.
4
Examine the mass air flow (MAF) sensor and throttle body for cleanliness and proper function.
5
Verify the functionality of the crankshaft position sensor and camshaft position sensor.
6
Inspect the battery and alternator for adequate voltage output.

Solution

1. Preparation

Tools Required: OBD-II scanner, fuel pressure gauge, socket set, multimeter, cleaning brush.
Ensure the vehicle is parked on a level surface and the engine is off. Disconnect the battery to ensure safety during inspection.

2. Fuel System Inspection

Sub-steps:
1. Connect the fuel pressure gauge to the fuel rail test port.
2. Turn the ignition key to the "on" position to activate the fuel pump without starting the engine.
3. Check the fuel pressure reading against the manufacturer specifications (typically 30-45 psi).
4. If pressure is inadequate, inspect the fuel filter for clogs and replace if necessary.
5. Check the fuel pump relay and wiring for proper function.

3. Ignition System Service

Sub-steps:
1. Remove the ignition coil packs using a socket set.
2. Inspect the spark plugs for wear and replace any that show signs of fouling or wear (gap should be between 0.040-0.060 inches).
3. Test the ignition coils with a multimeter to ensure they are within specified resistance ranges.
4. Reinstall any components after servicing and securing all connections.

4. Sensor Check and Cleaning

Sub-steps:
1. Locate the MAF sensor and carefully remove it from the intake.
2. Use MAF cleaner to clean the sensor and let it dry completely before reinstalling.
3. Inspect the throttle body for carbon buildup and clean it using throttle body cleaner.
4. Reconnect all electrical connectors and ensure they are secure.

5. Crankshaft and Camshaft Sensor Inspection

Sub-steps:
1. Identify the crankshaft and camshaft position sensors based on the vehicle's service manual.
2. Disconnect the electrical connectors and use a multimeter to test for continuity.
3. If the sensors are faulty, replace them with new components.
4. Reconnect all connectors after testing.

6. Battery and Alternator Testing

Sub-steps:
1. Use a multimeter to check the battery voltage (should be around 12.6 volts).
2. Start the engine and check the voltage across the battery terminals (should be between 13.7-14.7 volts).
3. If readings are outside these ranges, replace the faulty battery or alternator.
4. Ensure all connections are clean and secure.