my Ford Explorer won't start in cold weather what could be wrong

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

511 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 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 working on the starter or fuel system

Symptoms

•Engine cranks but does not start
•Weak or slow cranking of the engine
•Dashboard warning lights illuminated
•Battery warning light activated
•Fuel smell near the engine bay
•Increased engine noise during cranking

Diagnostic Steps

1
Check the battery voltage using a multimeter to ensure it is fully charged (should be around 12.6 volts)
2
Inspect battery terminals and cables for corrosion or loose connections
3
Test the starter motor for functionality by bypassing the ignition circuit
4
Scan for error codes using an OBD-II scanner to identify any stored fault codes
5
Check the fuel pump operation by listening for it to activate when the ignition is turned on
6
Inspect the engine oil viscosity; ensure it's suitable for cold temperatures

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
•Socket set
•Wire brush
•OBD-II scanner
•Screwdrivers

Parts Required

•New battery (if necessary)
•New starter motor (if necessary)
•Fuel pump (if necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the battery voltage using a multimeter to ensure it is fully charged (should be around 12.6 volts)
2
Inspect battery terminals and cables for corrosion or loose connections
3
Test the starter motor for functionality by bypassing the ignition circuit
4
Scan for error codes using an OBD-II scanner to identify any stored fault codes
5
Check the fuel pump operation by listening for it to activate when the ignition is turned on
6
Inspect the engine oil viscosity; ensure it's suitable for cold temperatures

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Disconnect the negative battery terminal to prevent any electrical short circuits.

2. Battery Inspection and Replacement

Sub-steps:
- Remove the battery from the vehicle.
- Clean the battery terminals and cable ends using a wire brush.
- Test the battery's charge; if below 12.4 volts, replace it with a new one.
- Install the new battery and reconnect the terminals, ensuring a snug fit.

3. Starter Motor Testing and Replacement

Sub-steps:
- Locate the starter motor; usually found on the transmission side.
- Remove the electrical connections from the starter.
- Unbolt the starter motor using a socket set.
- Test the starter motor by connecting it directly to the battery; if it does not engage, replace it.
- Install the new starter motor and reattach the electrical connections, ensuring they are secure.

4. Fuel System Check

Sub-steps:
- Inspect the fuel pump relay and fuse; replace if faulty.
- Access the fuel pump assembly by removing the rear seat or trunk panel as necessary.
- Test the fuel pump operation by applying direct power to it; replace if it fails to activate.
- Reassemble the fuel system components and check for any leaks.

Tools Required:

Multimeter
Socket set
Wire brush
OBD-II scanner
Screwdrivers

Parts Required:

New battery (if necessary)
New starter motor (if necessary)
Fuel pump (if necessary)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine to cool before working on the starter or fuel system.