why does my Ford Explorer have a hard time starting after it rains?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

565 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 starting issues in Ford Explorer after rain. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

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 intake system.

Symptoms

•Engine cranks but does not start
•Check engine light illuminated
•Fuel odor near the engine
•Increased cranking time before starting
•Random misfires or rough idle after starting

Diagnostic Steps

1
Inspect the battery terminals for corrosion or loose connections.
2
Check the spark plugs and ignition coils for moisture or damage.
3
Use an OBD-II scanner to check for any stored trouble codes.
4
Inspect the air intake system for water ingress.
5
Test the fuel pump operation and fuel pressure.
6
Examine electrical connections for signs of moisture or corrosion.

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

•Multimeter
•OBD-II scanner
•Socket set
•Torque wrench
•Screwdriver set
•Fuel pressure gauge

Parts Required

•Spark plugs (if worn)
•Ignition coils (if damaged)
•Fuel pump (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the battery terminals for corrosion or loose connections.
2
Check the spark plugs and ignition coils for moisture or damage.
3
Use an OBD-II scanner to check for any stored trouble codes.
4
Inspect the air intake system for water ingress.
5
Test the fuel pump operation and fuel pressure.
6
Examine electrical connections for signs of moisture or corrosion.

Solution

1. Preparation

Gather tools including a multimeter, OBD-II scanner, socket set, and cleaning supplies.
Ensure the vehicle is parked on a level surface with the engine off and cool.

2. Battery Inspection

Tools Required: Wrench, wire brush, multimeter.
Disconnect the negative terminal of the battery.
Clean the battery terminals using a wire brush.
Reconnect the terminals securely and use a multimeter to check the battery voltage (should be around 12.6 volts).

3. Spark Plug and Ignition Coil Inspection

Tools Required: Socket set, torque wrench.
Remove the spark plug wires or ignition coil connectors.
Inspect for moisture and clean with a dry cloth.
Remove spark plugs and inspect for wear or fouling; replace if necessary.
Reinstall spark plugs and torque to manufacturer specifications.

4. Air Intake System Inspection

Tools Required: Screwdriver set.
Remove the air filter housing and inspect the air filter for water damage.
Check for moisture in the intake manifold; dry if necessary.
Ensure the air intake duct is correctly sealed.

5. Fuel System Check

Tools Required: Fuel pressure gauge.
Locate the fuel pump relay and ensure it is functioning properly.
Connect a fuel pressure gauge to the fuel rail and turn the ignition to the 'ON' position (do not start).
Check that the pressure meets manufacturer specifications; replace the fuel pump if pressure is low.

6. Electrical Connections Check

Tools Required: Multimeter.
Inspect all visible electrical connectors for signs of corrosion or moisture.
Disconnect and apply dielectric grease to connectors to prevent moisture ingress.