why is my Ford Explorer Fifth Generation (2011-2019) transmission slipping when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

529 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 (2011-2019). 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.

Symptoms

•Transmission slips when accelerating from a stop or low speed
•Unusual engine revving without corresponding vehicle speed increase
•Harsh or delayed shifting between gears
•Fluid leaks under the vehicle
•Warning light illuminated on the dashboard
•Decreased fuel efficiency

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check the transmission fluid level and condition; look for discoloration or a burnt smell.
3
Inspect for any visible leaks around the transmission pan and seals.
4
Test the transmission fluid pressure using a pressure gauge to ensure it meets specifications.
5
Perform a road test to confirm slipping under various driving conditions and note specific RPMs at which slipping occurs.
6
Inspect the transmission filter for clogs and consider replacing it if necessary.

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
•Pressure gauge

Parts Required

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

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check the transmission fluid level and condition; look for discoloration or a burnt smell.
3
Inspect for any visible leaks around the transmission pan and seals.
4
Test the transmission fluid pressure using a pressure gauge to ensure it meets specifications.
5
Perform a road test to confirm slipping under various driving conditions and note specific RPMs at which slipping occurs.
6
Inspect the transmission filter for clogs and consider replacing it if necessary.

Solution

1. Preparation

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

2. Check and Replace Transmission Fluid

Sub-steps:
1. Remove the transmission dipstick and check the fluid level.
2. If low, add the manufacturer-recommended transmission fluid.
3. If fluid is dirty, proceed to drain and replace.
Tools Required:
- Transmission fluid pump
- Socket set
Safety Warnings: Ensure the vehicle is cool to avoid burns from hot fluid.

3. Inspect and Replace Transmission Filter

Sub-steps:
1. Remove the transmission pan using a socket set.
2. Carefully clean the pan and inspect for metal shavings.
3. Replace the old filter with a new one.
4. Reattach the transmission pan with a new gasket.
Tools Required:
- Torque wrench (for reinstallation)
Safety Warnings: Ensure all old fluid is drained before removing the pan.

4. Check and Repair Transmission Components

Sub-steps:
1. Inspect the valve body for any sticking valves.
2. Replace any worn solenoids that control shifting.
3. If necessary, rebuild the transmission or replace it.
Tools Required:
- Torque wrench
- Various hand tools for disassembly
Safety Warnings: Disconnect the battery throughout the process to prevent electrical issues.