my Ford Explorer transmission slips when I accelerate, what's wrong?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

4-8 hours

Time

hard

Difficulty

high

Severity

3 min read

479 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 issues in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

4-8 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the engine to cool before working on the transmission.
•Disconnect the battery before starting any electrical work.

Symptoms

•Transmission slips when accelerating
•Erratic or delayed shifting
•Engine RPM increases without corresponding vehicle speed
•Check engine light may be illuminated
•Unusual noises (grinding or whining) from the transmission

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related codes.
2
Inspect the transmission fluid level and condition; check for burn smell or dark color.
3
Examine the transmission fluid filter for clogs or debris.
4
Check for any visible leaks around the transmission and cooling lines.
5
Test the torque converter operation by monitoring the engine RPM during acceleration.
6
Inspect the transmission control module (TCM) for faults.

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
•Transmission fluid pump
•Socket set
•Torque wrench
•Gasket scraper
•Transmission jack

Parts Required

•Transmission fluid
•Transmission filter
•Gasket for transmission pan

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related codes.
2
Inspect the transmission fluid level and condition; check for burn smell or dark color.
3
Examine the transmission fluid filter for clogs or debris.
4
Check for any visible leaks around the transmission and cooling lines.
5
Test the torque converter operation by monitoring the engine RPM during acceleration.
6
Inspect the transmission control module (TCM) for faults.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to avoid electrical shorts.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick, remove it, and wipe it clean.
2. Insert it back and pull it out to check fluid level; add fluid if low.
3. If fluid is dark or burnt, drain the transmission fluid through the pan.
4. Replace with manufacturer-recommended transmission fluid.
Tools Required:
- Transmission fluid pump
- Socket set

3. Replace Transmission Filter

Sub-steps:
1. Remove the transmission pan by unscrewing the bolts (be cautious of fluid drainage).
2. Take out the old filter and discard it.
3. Install the new filter, ensuring it is seated properly.
4. Clean the pan and reinstall it with a new gasket, torquing bolts to manufacturer specifications.
Tools Required:
- Gasket scraper
- Torque wrench

4. Inspect and Repair Internal Components

Sub-steps:
1. If slipping persists after fluid and filter replacement, disassemble the transmission as per manufacturer guidelines.
2. Inspect clutches, bands, and gears for wear or damage.
3. Replace any worn components as necessary.
Tools Required:
- Transmission jack
- Complete socket and wrench set