Ford Explorer Sixth Generation (2020-present) transmission slips when I accelerate what to check

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

552 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 2020-present Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, 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 to prevent burns.

Symptoms

•Transmission slips while accelerating
•Engine revs higher than normal without corresponding speed increase
•Delayed engagement when shifting from park to drive or reverse
•Unusual noises (grinding or whining) during operation
•Check engine light may be illuminated

Diagnostic Steps

1
Scan the vehicle’s onboard diagnostic system using an OBD-II scanner for any fault codes.
2
Check the transmission fluid level and condition; look for signs of contamination or burning.
3
Inspect the transmission fluid for proper specifications (color and smell).
4
Examine the transmission filter for blockage or debris.
5
Test the operation of the throttle position sensor (TPS) and vehicle speed sensor (VSS).
6
Conduct a road test to observe transmission behavior under various driving conditions.

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
•Multimeter
•Socket set
•Torque wrench
•Funnel
•Fluid catch pan

Parts Required

•Transmission fluid (specific to Ford specifications)
•Transmission filter
•Gasket for transmission pan
•Throttle position sensor (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Scan the vehicle’s onboard diagnostic system using an OBD-II scanner for any fault codes.
2
Check the transmission fluid level and condition; look for signs of contamination or burning.
3
Inspect the transmission fluid for proper specifications (color and smell).
4
Examine the transmission filter for blockage or debris.
5
Test the operation of the throttle position sensor (TPS) and vehicle speed sensor (VSS).
6
Conduct a road test to observe transmission behavior under various driving conditions.

Solution

1. Preparation

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

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it to check fluid level.
2. If the fluid is low, add the manufacturer-recommended transmission fluid.
3. If fluid is dirty or burnt, drain the old fluid completely from the transmission pan.
4. Replace the transmission fluid with fresh fluid according to manufacturer specifications.
Tools Required:
- Funnel
- Fluid catch pan
- Transmission fluid (check owner’s manual for specific type)

3. Inspect and Replace Transmission Filter

Sub-steps:
1. Remove the transmission pan by loosening the bolts (torque specifications are usually around 10-12 ft-lbs).
2. Take out the old filter and clean the pan.
3. Install the new filter and gasket, ensuring proper alignment.
4. Reinstall the transmission pan and tighten the bolts to manufacturer specifications.
Tools Required:
- Socket set
- Torque wrench
- Gasket scraper

4. Test and Replace Throttle Position Sensor (if necessary)

Sub-steps:
1. Disconnect the electrical connector from the throttle position sensor.
2. Use a multimeter to check the resistance values as per specifications.
3. If out of range, remove the faulty sensor and install a new one.
4. Reconnect the electrical connector.
Tools Required:
- Multimeter
- Socket set