why does my Ford Explorer Fifth Generation (2011-2019) have a transmission slipping issue

Ford Explorer Fifth Generation (2011-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

high

Severity

3 min read

565 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

Diagnose and fix transmission slipping issues in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

3-5 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 fluid pan.

Symptoms

•Engine RPMs increase without corresponding vehicle speed
•Harsh or delayed shifting between gears
•Unusual noises during gear changes (e.g., whining or grinding)
•Check engine light illuminated
•Fluid leaks under the vehicle
•Loss of acceleration or power

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related faults.
2
Check the transmission fluid level and condition; low or burnt fluid can cause slipping.
3
Inspect the transmission fluid for metal shavings or debris, which may indicate internal damage.
4
Examine the transmission filter for clogs or contamination that could restrict fluid flow.
5
Test the transmission solenoids for proper operation, as faulty solenoids can affect shifting.
6
Perform a road test to evaluate transmission performance 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
•Socket set
•Torque wrench
•Funnel
•Multimeter
•Transmission fluid pump (optional)

Parts Required

•Ford Mercon LV 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 faults.
2
Check the transmission fluid level and condition; low or burnt fluid can cause slipping.
3
Inspect the transmission fluid for metal shavings or debris, which may indicate internal damage.
4
Examine the transmission filter for clogs or contamination that could restrict fluid flow.
5
Test the transmission solenoids for proper operation, as faulty solenoids can affect shifting.
6
Perform a road test to evaluate transmission performance under various driving conditions.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface, and engage the parking brake.
Disconnect the battery to ensure safety while working on electrical components.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Locate the transmission dipstick and remove it to check the fluid level.
2. If low, add the correct type of transmission fluid (Ford Mercon LV) until the proper level is reached.
3. If the fluid is dark or has a burnt smell, proceed to change the fluid.
4. Drain the old transmission fluid by removing the drain plug or pan.
5. Replace the transmission filter by removing the transmission pan, disposing of the old filter, and installing a new one.

3. Inspect and Replace Transmission Solenoids

Sub-steps:
1. Remove the transmission valve body to access the solenoids.
2. Test each solenoid with a multimeter to ensure they are within specifications.
3. Replace any faulty solenoids with new ones, ensuring proper alignment and connection.
4. Reassemble the valve body, ensuring all gaskets and seals are in good condition.

4. Reassemble and Fill Transmission

Sub-steps:
1. Reinstall the transmission pan securely with the correct torque specification (typically 10-12 ft-lbs).
2. Refill the transmission with the correct type and amount of fluid using a funnel.
3. Start the engine and shift through all gears to circulate the fluid.
4. Recheck the fluid level and add more if necessary.