how to resolve Ford Explorer Fifth Generation (2011-2019) hard starting issues

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

582 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 hard starting issues in Ford Explorer (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 ignition components.

Symptoms

•Check engine light illuminated
•Engine cranks but does not start
•Intermittent starting issues
•Rough idle after starting
•Decreased fuel efficiency
•Fuel odor near the vehicle

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Inspect the battery and connections to ensure proper voltage and connectivity.
3
Check the fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.
4
Inspect the ignition system components (spark plugs, ignition coils) for wear or damage.
5
Test the crankshaft position sensor for proper operation using a multimeter.
6
Examine the fuel injectors for clogs or malfunction.

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

•New battery (if needed)
•Fuel pump (if needed)
•Spark plugs
•Ignition coils (if needed)
•Crankshaft position sensor (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Inspect the battery and connections to ensure proper voltage and connectivity.
3
Check the fuel pressure using a fuel pressure gauge to ensure the fuel pump is functioning correctly.
4
Inspect the ignition system components (spark plugs, ignition coils) for wear or damage.
5
Test the crankshaft position sensor for proper operation using a multimeter.
6
Examine the fuel injectors for clogs or malfunction.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety.
Ensure vehicle is on a flat surface and secure it with wheel chocks.

2. Battery Inspection and Replacement

Sub-steps:
1. Inspect the battery terminals for corrosion; clean with a wire brush if necessary.
2. Test battery voltage with a multimeter; replace the battery if voltage is below 12.4 volts.
3. Reconnect the battery terminals securely.
Tools Required: Multimeter, wire brush.

3. Fuel System Check

Sub-steps:
1. Connect a fuel pressure gauge to the fuel rail.
2. Turn the ignition to the "ON" position without starting the engine and check the fuel pressure reading; it should be within the manufacturer’s specifications (typically around 50-60 PSI).
3. If pressure is low, inspect the fuel pump fuse and relay; replace if necessary.
4. If the pump is faulty, remove the fuel pump from the tank and replace it.
Tools Required: Fuel pressure gauge, socket set.

4. Ignition System Inspection

Sub-steps:
1. Remove the spark plugs and inspect for wear or carbon buildup; replace if needed.
2. Test each ignition coil for resistance using a multimeter; replace any coils that are out of specification.
3. Reinstall new or cleaned spark plugs and ignition components.
Tools Required: Socket set, multimeter.

5. Crankshaft Position Sensor Replacement

Sub-steps:
1. Locate the crankshaft position sensor (usually near the crankshaft pulley).
2. Disconnect the wiring harness from the sensor.
3. Remove the mounting bolts and take out the old sensor.
4. Install the new sensor and reconnect the wiring harness.
Tools Required: Socket set, torque wrench.