why does my Ford Explorer Fifth Generation (2011-2019) have a rough start in the morning

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

558 words

Problem Statement

Learn how to diagnose and fix rough starting issues in Ford Explorer Fifth Generation (2011-2019). 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 the battery before working on electrical systems.
•Allow the engine to cool before inspecting the cooling system or components.

Symptoms

•Engine cranks but does not start smoothly
•Rough idle upon starting
•Engine stalling shortly after starting
•Increased exhaust smoke during initial startup
•Longer cranking time before the engine starts

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential issues.
2
Check the condition of the battery and electrical connections.
3
Inspect the fuel system for proper pressure and flow.
4
Test the ignition system components, including spark plugs and coils.
5
Examine the engine coolant temperature sensor for accurate readings.
6
Evaluate the air intake system for blockages or leaks.

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
•Wire brush

Parts Required

•Spark plugs (if worn)
•Ignition coils (if faulty)
•Fuel filter (if clogged)
•Engine coolant temperature sensor (if defective)

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 potential issues.
2
Check the condition of the battery and electrical connections.
3
Inspect the fuel system for proper pressure and flow.
4
Test the ignition system components, including spark plugs and coils.
5
Examine the engine coolant temperature sensor for accurate readings.
6
Evaluate the air intake system for blockages or leaks.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a level surface.
Disconnect the battery to ensure safety during repairs.

2. Battery and Electrical System Check

Sub-steps:
1. Use a multimeter to check the battery voltage; it should be around 12.6 volts or higher.
2. Inspect battery terminals for corrosion and clean if necessary using a wire brush.
3. Tighten any loose connections.

3. Fuel System Inspection

Sub-steps:
1. Locate the fuel pressure test port on the fuel rail.
2. Connect a fuel pressure gauge and turn the ignition to the 'ON' position without starting the engine, checking for proper pressure (typically 35-60 psi).
3. If pressure is low, check the fuel pump relay and fuse, then inspect the fuel pump and filter for blockage.

4. Ignition System Testing

Sub-steps:
1. Remove spark plugs and inspect for wear or fouling; replace if necessary.
2. Use a spark tester to check for spark at each ignition coil.
3. Replace any faulty spark plugs or ignition coils as needed.

5. Coolant Temperature Sensor Inspection

Sub-steps:
1. Locate the engine coolant temperature sensor.
2. Disconnect the sensor connector and use a multimeter to measure resistance. Compare readings with specifications in the service manual.
3. Replace the sensor if it is out of specification.

6. Air Intake System Check

Sub-steps:
1. Inspect the air filter for cleanliness; replace if dirty.
2. Check the intake ducts for any signs of leaks or cracks.
3. Ensure the throttle body is clean and free from carbon buildup.