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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

3 min read

562 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 2011-2019. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

4-8 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before starting work.
•Disconnect the battery before working on electrical components.

Symptoms

•Transmission slips when accelerating
•Unusual engine RPM increase without corresponding vehicle speed increase
•Harsh or delayed shifting between gears
•Check engine light illuminated
•Fluid leaks under the vehicle
•Burning smell from the transmission area

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any error codes.
2
Inspect the transmission fluid level and condition; ensure it's at the correct level and not burnt or contaminated.
3
Check for any visible leaks around the transmission and seals.
4
Inspect the transmission filter for clogs or restrictions.
5
Test the transmission control module (TCM) for proper function and any communication issues.
6
Inspect the condition of the torque converter for signs of failure.

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
•Drain pan
•Transmission fluid pump

Parts Required

•Transmission fluid (specify type as per owner's manual)
•Transmission filter
•Transmission pan gasket
•Torque converter (if needed)

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Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner to check for any error codes.
2
Inspect the transmission fluid level and condition; ensure it's at the correct level and not burnt or contaminated.
3
Check for any visible leaks around the transmission and seals.
4
Inspect the transmission filter for clogs or restrictions.
5
Test the transmission control module (TCM) for proper function and any communication issues.
6
Inspect the condition of the torque converter for signs of failure.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent any electrical issues during repair.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Remove the transmission dipstick and check the fluid level.
2. If low, add the appropriate type of transmission fluid (consult owner’s manual for specifications).
3. If fluid is burnt or dirty, proceed to drain and replace.
4. Place a drain pan under the transmission pan, remove the pan bolts, and carefully lower the pan.
5. Replace the old gasket and clean the mating surfaces.
6. Refill the transmission with new fluid through the dipstick tube.

3. Replace Transmission Filter

Sub-steps:
1. With the transmission pan removed, locate and remove the old transmission filter.
2. Install the new filter in place, ensuring it is securely fastened.
3. Reinstall the transmission pan with a new gasket and torque bolts to specified value (consult service manual for torque specifications).

4. Check and Repair Torque Converter

Sub-steps:
1. If the torque converter is malfunctioning, it may require removal.
2. Disconnect the transmission from the engine and remove the torque converter.
3. Inspect for wear or damage; replace if necessary.
4. Reinstall the new or repaired torque converter and reconnect the transmission.

5. Reconnect Battery and Test Drive

Sub-steps:
1. Reconnect the battery terminals.
2. Start the vehicle and let it warm up.
3. Test drive the vehicle to ensure proper transmission operation.