what causes the Ford Explorer Fifth Generation (2011-2019) to have a rough start?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

546 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

Discover how to diagnose and fix rough starting issues in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms and solutions.

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 performing any maintenance.

Symptoms

•Check engine light illuminated
•Engine cranks longer than usual before starting
•Rough idle after starting
•Engine stalling shortly after starting
•Poor acceleration during initial drive
•Unusual engine noises (e.g., knocking or pinging)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check the battery voltage and connections to ensure proper power supply.
3
Inspect the fuel system for pressure and leaks, including the fuel pump and fuel filter.
4
Examine the ignition system, including spark plugs, ignition coils, and wiring.
5
Review the air intake system for restrictions, including the air filter and throttle body.
6
Perform a compression test to verify engine cylinder health.

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
•Socket set
•Torque wrench
•Throttle body cleaner

Parts Required

•Fuel filter
•Spark plugs
•Ignition coils (if needed)
•Air filter

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Check the battery voltage and connections to ensure proper power supply.
3
Inspect the fuel system for pressure and leaks, including the fuel pump and fuel filter.
4
Examine the ignition system, including spark plugs, ignition coils, and wiring.
5
Review the air intake system for restrictions, including the air filter and throttle body.
6
Perform a compression test to verify engine cylinder health.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Disconnect the negative battery terminal for safety.

2. Fuel System Inspection

Check Fuel Pressure
- Use a fuel pressure gauge to test the fuel pressure at the fuel rail.
- Ensure it meets the manufacturer specifications (typically around 50-60 psi).
Replace Fuel Filter
- If clogged, locate the fuel filter (usually along the fuel line).
- Relieve fuel system pressure, disconnect fuel lines, and replace the filter.

3. Ignition System Repair

Inspect and Replace Spark Plugs
- Remove the ignition coils using a socket set.
- Remove spark plugs and inspect for wear or deposits.
- Replace with OEM spark plugs, torque to the manufacturer’s specifications (typically around 13-15 ft-lbs).
Check Ignition Coils
- Test each coil with a multimeter; replace any faulty coils.
- Reinstall all components securely.

4. Air Intake System Maintenance

Clean Throttle Body
- Remove the air intake duct to access the throttle body.
- Use throttle body cleaner and a soft cloth to remove carbon buildup.
- Reconnect the intake duct and ensure all clamps are secure.
Replace Air Filter
- Remove the air filter housing cover.
- Replace with a new, clean air filter, ensuring a snug fit.

5. Compression Test

If rough starting persists, perform a compression test on each cylinder.
Document readings and replace worn components as necessary.