why does my Ford Explorer Fifth Generation (2011-2019) engine hesitate when starting

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

483 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 hesitation in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms 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 fuel system to depressurize before servicing.

Symptoms

•Engine cranks but does not start immediately
•Rough idling when the engine does start
•Check engine light illuminated
•Decreased fuel efficiency
•Unusual noises during cranking (e.g., clicking or grinding)
•Engine stalling shortly after starting

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any specific faults.
2
Check the battery voltage and condition to ensure it has sufficient power.
3
Inspect the fuel pump operation by listening for it when the ignition is turned on.
4
Test the fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
5
Examine the ignition system components, including spark plugs and ignition coils, for wear or damage.
6
Inspect the air intake system for blockages or leaks that could affect air-fuel mixture.

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
•Multimeter
•Fuel pressure gauge
•Socket set
•Torque wrench

Parts Required

•Battery (if needed)
•Fuel pump and filter (if needed)
•Spark plugs (if needed)
•Ignition coils (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any specific faults.
2
Check the battery voltage and condition to ensure it has sufficient power.
3
Inspect the fuel pump operation by listening for it when the ignition is turned on.
4
Test the fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
5
Examine the ignition system components, including spark plugs and ignition coils, for wear or damage.
6
Inspect the air intake system for blockages or leaks that could affect air-fuel mixture.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety while working on electrical components.

2. Battery Inspection

Sub-steps:
1. Use a multimeter to check the battery voltage; it should be around 12.6V when fully charged.
2. Clean the battery terminals and connections if they are corroded.
3. If the battery is weak, replace it with a new one that meets OEM specifications.

3. Fuel System Repair

Sub-steps:
1. If fuel pressure is low, replace the fuel pump and filter.
2. Ensure all fuel lines are properly connected and free of leaks.
3. If necessary, clean or replace the fuel injectors.

4. Ignition System Repair

Sub-steps:
1. Remove and inspect spark plugs for wear; replace if necessary with OEM spark plugs.
2. Test ignition coils with a multimeter; replace any that are out of specification.
3. Check wiring connections to the ignition system for damage.

5. Reassembly and Testing

Sub-steps:
1. Reconnect the battery.
2. Start the engine to verify successful repair.
3. Observe for any unusual noises or warning lights.