my Ford Explorer's transmission is slipping when accelerating what should I do

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

533 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. 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.
•Allow the engine to cool before opening the transmission pan.

Symptoms

•Engine RPMs increase without corresponding vehicle speed
•Delayed or harsh shifting between gears
•Check engine light illuminated
•Unusual noises (grinding or whining) when accelerating
•Fluid leaks under the vehicle
•Decreased fuel efficiency

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential transmission-related codes.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect the transmission fluid lines and fittings for leaks or damage.
4
Examine the transmission filter for clogs or restrictions.
5
Test the transmission solenoids for proper operation with a multimeter.
6
Assess the condition of the clutch packs (if applicable) by checking for wear or damage.

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
•Fluid catch pan
•Socket set
•Multimeter
•Transmission fluid pump

Parts Required

•Transmission filter
•Transmission pan gasket
•Transmission fluid
•Solenoids (if defective)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify potential transmission-related codes.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect the transmission fluid lines and fittings for leaks or damage.
4
Examine the transmission filter for clogs or restrictions.
5
Test the transmission solenoids for proper operation with a multimeter.
6
Assess the condition of the clutch packs (if applicable) by checking for wear or damage.

Solution

1. Preparation

Gather tools and parts required for the repair.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the battery to avoid electrical shorts.

2. Change Transmission Fluid and Filter

Tools Required: Socket set, wrench set, transmission fluid pump, fluid catch pan.
Sub-steps:
1. Place the fluid catch pan under the transmission pan.
2. Remove the transmission pan bolts using a socket wrench and carefully lower the pan to drain the fluid.
3. Clean the transmission pan and magnet inside of any debris.
4. Replace the old transmission filter with a new one, ensuring it is seated properly.
5. Reinstall the transmission pan with a new gasket, tightening bolts to manufacturer specifications (typically 12-16 ft-lbs).

3. Inspect and Replace Transmission Solenoids (if necessary)

Tools Required: Multimeter, socket set.
Sub-steps:
1. Locate the transmission solenoids (consult repair manual for specific location).
2. Disconnect the electrical connectors from the solenoids.
3. Use a multimeter to test each solenoid for resistance according to manufacturer specifications.
4. Replace any defective solenoids with new ones, ensuring proper installation of connectors.

4. Test Drive and Final Checks

After completing the repairs, refill the transmission with the appropriate fluid type (check owner’s manual for specifications).
Start the vehicle and allow it to idle for a few minutes.
Check for leaks around the transmission pan and solenoids.
Perform a test drive to ensure smooth shifting and proper operation.