why does my Ford Explorer Fifth Generation (2011-2019) transmission slip when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

562 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 (2011-2019). 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 battery before working on electrical systems.
•Allow the engine and transmission to cool before opening any components.

Symptoms

•Transmission slips during acceleration
•Unusual engine revving without corresponding vehicle speed increase
•Harsh or delayed shifting between gears
•Check engine light may be illuminated
•Fluid leaks under the vehicle
•Burning smell from the transmission area

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related issues.
2
Check the transmission fluid level and condition; look for discoloration or burnt smell.
3
Inspect transmission fluid for metal shavings or debris, indicating internal wear.
4
Verify the throttle position sensor (TPS) operation with a multimeter.
5
Examine the transmission control module (TCM) for faults or poor connections.
6
Perform a road test to replicate the slipping and note any specific conditions (e.g., speed, engine load).

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
•Fluid pump
•Drain pan
•Multimeter

Parts Required

•Transmission fluid
•Transmission filter and gasket (if applicable)
•Throttle Position Sensor (if applicable)
•Transmission Control Module (if necessary)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related issues.
2
Check the transmission fluid level and condition; look for discoloration or burnt smell.
3
Inspect transmission fluid for metal shavings or debris, indicating internal wear.
4
Verify the throttle position sensor (TPS) operation with a multimeter.
5
Examine the transmission control module (TCM) for faults or poor connections.
6
Perform a road test to replicate the slipping and note any specific conditions (e.g., speed, engine load).

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety during repairs.
Raise the vehicle using jack stands and secure it on a level surface.

2. Check and Replace Transmission Fluid

Tools Required: Socket set, fluid pump, drain pan.
Sub-steps:
1. Place a drain pan under the transmission pan.
2. Remove the transmission fluid pan bolts and carefully lower the pan.
3. Inspect the pan for debris or shavings; clean or replace if necessary.
4. Replace the transmission filter if applicable.
5. Reinstall the pan with new gasket material, tightening to the manufacturer’s torque specifications.
6. Use a fluid pump to refill the transmission with the correct type of fluid as specified in the owner's manual.

3. Inspect and Replace Transmission Control Module (if necessary)

Tools Required: Screwdrivers, socket set.
Sub-steps:
1. Locate the transmission control module, usually found near the transmission.
2. Disconnect the wiring harness and remove the module from its mounting.
3. Install the new transmission control module and reconnect the wiring harness.
4. Clear any diagnostic trouble codes from the vehicle's computer using an OBD-II scanner.

4. Verify Throttle Position Sensor (if necessary)

Tools Required: Multimeter.
Sub-steps:
1. Locate the throttle position sensor on the throttle body.
2. Disconnect the sensor and test the resistance with a multimeter according to specifications.
3. Replace the TPS if it does not meet specifications.