how to troubleshoot Ford Explorer Sixth Generation (2020-present) transmission slipping

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

609 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 troubleshoot and fix transmission slipping issues in the Ford Explorer Sixth Generation. 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 vehicle to cool before inspecting the transmission to avoid burns.

Symptoms

•Engine RPM increases without corresponding vehicle acceleration
•Delayed or harsh shifting between gears
•Unusual noises during gear changes (grinding or whining)
•Warning messages on the dashboard (e.g., transmission warning light)
•Fluid leaks under the vehicle
•Poor fuel economy

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify transmission-related trouble codes.
2
Check the transmission fluid level and condition (color, odor).
3
Inspect for external leaks around the transmission pan and seals.
4
Test the transmission fluid pressure using a pressure gauge to ensure it meets specifications.
5
Examine the throttle position sensor (TPS) and vehicle speed sensor (VSS) for proper operation.
6
Perform a visual inspection of the transmission harness and connectors for damage or corrosion.

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
•Funnel
•Socket set
•Torque wrench
•Fluid catch pan
•Multimeter
•Wire brush
•Electrical contact cleaner

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Throttle position sensor (if faulty)
•Vehicle speed sensor (if faulty)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify transmission-related trouble codes.
2
Check the transmission fluid level and condition (color, odor).
3
Inspect for external leaks around the transmission pan and seals.
4
Test the transmission fluid pressure using a pressure gauge to ensure it meets specifications.
5
Examine the throttle position sensor (TPS) and vehicle speed sensor (VSS) for proper operation.
6
Perform a visual inspection of the transmission harness and connectors for damage or corrosion.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a level surface and secure with wheel chocks.
Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Tools Required: Transmission fluid pump, funnel, socket set, torque wrench, fluid catch pan.
Remove the transmission fluid pan using the appropriate socket.
Allow the fluid to drain into the catch pan completely.
Inspect the fluid for metal shavings or burnt odor.
Replace the transmission filter if applicable.
Reinstall the pan, tightening bolts to manufacturer specifications (usually around 10-12 ft-lbs).
Refill the transmission with the correct type of fluid as specified in the owner’s manual.

3. Inspect and Replace Faulty Sensors

Tools Required: Multimeter, socket set.
Locate the throttle position sensor (TPS) and vehicle speed sensor (VSS).
Disconnect the wiring harness from the sensors.
Use a multimeter to test the resistance and output voltage of each sensor according to specifications.
If either sensor fails the test, remove it and install a new one, securing it with manufacturer-recommended torque.

4. Repair Electrical Connections

Tools Required: Wire brush, electrical contact cleaner, heat shrink tubing.
Inspect the transmission harness and connectors for signs of wear or corrosion.
Clean any corroded connections using a wire brush and electrical contact cleaner.
Repair damaged wiring with solder and heat shrink tubing to ensure a good electrical connection.

5. Test Drive and Monitor

Reconnect the battery and start the engine.
Test drive the vehicle to check for proper transmission operation.
Monitor the transmission’s shifting patterns and overall performance.