why does my Ford Explorer Fifth Generation (2011-2019) transmission slip when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

553 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 transmission slipping in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Ensure the engine is cool before opening any components to prevent burns.

Symptoms

•Engine RPM increases without a corresponding increase in vehicle speed
•Delayed or harsh shifting between gears
•Grinding or whining noise from the transmission
•Warning light illuminated on the dashboard (e.g., check engine light)
•Fluid leaks under the vehicle
•Decreased fuel efficiency

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related issues.
2
Check the transmission fluid level and condition; look for signs of contamination or burning.
3
Inspect the transmission fluid for proper color and smell; it should be red and not burnt.
4
Examine the transmission filter for blockage or damage.
5
Assess engine and transmission mounts for wear or damage that could affect alignment.
6
Conduct a road test to replicate the slipping issue and observe under different driving conditions.

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
•Socket set
•Torque wrench
•Transmission funnel
•Drain pan

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter
•Transmission pan gasket

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related issues.
2
Check the transmission fluid level and condition; look for signs of contamination or burning.
3
Inspect the transmission fluid for proper color and smell; it should be red and not burnt.
4
Examine the transmission filter for blockage or damage.
5
Assess engine and transmission mounts for wear or damage that could affect alignment.
6
Conduct a road test to replicate the slipping issue and observe under different driving conditions.

Solution

1. Preparation

Gather necessary tools and parts for the repair.
Disconnect the battery to prevent electrical shorts while working on the transmission.

2. Check and Replace Transmission Fluid

Tools Required: Socket set, transmission funnel, clean rags.
Inspect the transmission fluid dipstick (if applicable) to check the level.
If low, add the appropriate transmission fluid (typically Mercon LV for Ford).
If fluid is burnt or contaminated, proceed to drain and replace.

3. Drain Transmission Fluid

Place a drain pan under the transmission pan.
Remove the transmission pan bolts using a socket set.
Carefully lower the pan to avoid spilling fluid; allow it to drain completely.

4. Replace Transmission Filter

Remove the old transmission filter from the transmission.
Install a new transmission filter, ensuring it is seated properly.
Use a new gasket for the transmission pan to prevent leaks.

5. Reassemble and Refill

Reattach the transmission pan using the correct torque specifications (usually around 10-12 ft-lbs).
Refill the transmission with new fluid through the dipstick tube using a funnel.
Start the engine and let it idle, shifting through all gears to circulate the new fluid.

6. Final Checks

Reconnect the battery and perform a road test to ensure smooth operation and verify that the slipping has been resolved.