my Ford Explorer fails to start in cold weather what should I check

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

585 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 during cold weather. Step-by-step guide with diagnostic procedures 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 components.
•Allow the engine to cool before inspecting or working on the fuel system.

Symptoms

•Engine cranks slowly or not at all
•Dashboard lights dim or flicker when attempting to start
•Unusual clicking noise from the starter
•Check engine light may be illuminated
•Fuel gauge reading low despite recent fill-up

Diagnostic Steps

1
Test the battery voltage using a multimeter.
2
Inspect battery terminals and cables for corrosion or loose connections.
3
Check the fuel level and ensure there is sufficient fuel in the tank.
4
Scan the vehicle's OBD-II system for any error codes.
5
Test the starter motor for proper operation.
6
Inspect the ignition system components (spark plugs, ignition coils).

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
•Wrench set
•Wire brush
•Dielectric grease

Parts Required

•Battery (if replacement is needed)
•Fuel pump (if faulty)
•Spark plugs (if worn)

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Diagnostic Steps

1
Test the battery voltage using a multimeter.
2
Inspect battery terminals and cables for corrosion or loose connections.
3
Check the fuel level and ensure there is sufficient fuel in the tank.
4
Scan the vehicle's OBD-II system for any error codes.
5
Test the starter motor for proper operation.
6
Inspect the ignition system components (spark plugs, ignition coils).

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, wrench set, and dielectric grease.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Battery Inspection and Replacement

Check Battery Voltage
- Use a multimeter to measure the battery voltage. A healthy battery should read around 12.6 volts.
- If below 12.4 volts, consider charging or replacing the battery.
Clean Terminals
- Remove the battery terminals using a wrench.
- Inspect for corrosion and clean with a mixture of baking soda and water. Use a wire brush if necessary.
- Apply dielectric grease on terminals for improved connection.
Replace Battery (if needed)
- If the battery is old (typically more than 3-5 years) or underperforming, replace it with a new battery of the correct size and specifications.
- Reconnect the battery terminals, tightening them securely.

3. Fuel System Check

Inspect Fuel Level
- Ensure the fuel tank has at least a quarter tank of fuel.
- If low, refill the tank before proceeding.
Test Fuel Pump Operation
- Turn the ignition key to the "On" position without starting. Listen for the fuel pump's whirring sound. If not heard, test the fuel pump relay and fuse.
- If the pump is faulty, replace it according to manufacturer specifications.

4. Starter and Ignition Inspection

Check Starter Motor
- Inspect wiring and connections to the starter for damage.
- Use a multimeter to test the starter for proper voltage when the key is turned to the "Start" position. If it fails, replace the starter motor.
Inspect Spark Plugs and Coils
- Remove spark plugs and inspect for wear or fouling. Replace if necessary.
- Test ignition coils using a multimeter, replacing any that are out of specification.