why does my Ford Explorer Sixth Generation (2020-present) transmission slip when accelerating

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

555 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 (2020-present). Step-by-step guide with symptoms, diagnostics, and solutions.

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 draining transmission fluid.

Symptoms

•Check engine light illuminated
•Unresponsive acceleration when pressing the gas pedal
•Engine revs without corresponding vehicle speed increase
•Harsh or delayed shifting between gears
•Fluid leakage under the vehicle
•Unusual whining or grinding noises during gear engagement

Diagnostic Steps

1
Scan the vehicle’s onboard computer with an OBD-II scanner for any error codes related to the transmission.
2
Check the transmission fluid level and condition; look for burnt smell or discoloration.
3
Inspect the transmission fluid cooler for leaks or blockages.
4
Examine the wiring and connectors related to the transmission for damage or corrosion.
5
Test the operation of the transmission solenoids for proper function.
6
Perform a road test while monitoring the transmission response at various speeds.

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
•Multimeter
•Fluid funnel

Parts Required

•Transmission fluid (specific type for Ford Explorer)
•Transmission filter
•Transmission pan gasket
•Transmission solenoids (if needed)

Related Faults

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Diagnostic Steps

1
Scan the vehicle’s onboard computer with an OBD-II scanner for any error codes related to the transmission.
2
Check the transmission fluid level and condition; look for burnt smell or discoloration.
3
Inspect the transmission fluid cooler for leaks or blockages.
4
Examine the wiring and connectors related to the transmission for damage or corrosion.
5
Test the operation of the transmission solenoids for proper function.
6
Perform a road test while monitoring the transmission response at various speeds.

Solution

1. Preparation

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

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it.
2. Using a funnel, add the correct type of transmission fluid as specified in the owner's manual.
3. Start the engine and allow it to reach operating temperature, then shift through all gears to circulate the fluid.
4. Recheck the fluid level and adjust if necessary.

3. Inspect and Replace Transmission Filter

Sub-steps:
1. Raise the vehicle using jack stands for safety.
2. Remove the transmission pan bolts using a socket set.
3. Carefully detach the pan to avoid spilling fluid.
4. Remove the old filter and replace it with a new one, ensuring the sealing surface is clean.
5. Reinstall the transmission pan with a new gasket, tightening bolts to the manufacturer’s specified torque.

4. Check and Repair Wiring and Connectors

Sub-steps:
1. Visually inspect the wiring harness connected to the transmission for any frays or damage.
2. Clean any corroded connectors with electrical contact cleaner.
3. If any wiring is damaged, splice in new sections using appropriate gauge wire and solder.

5. Test Transmission Solenoids

Sub-steps:
1. Locate the solenoids on the transmission based on the service manual.
2. Disconnect the electrical connectors and test each solenoid using a multimeter to verify resistance values.
3. Replace any faulty solenoids with new parts.