my Ford Explorer transmission is slipping when I accelerate what could be wrong

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

541 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 slipping transmission issues in Ford Explorer. 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.
•Ensure the engine and transmission are cool before starting repairs.

Symptoms

•Slipping sensation during acceleration
•Delayed engagement when shifting from park to drive/reverse
•Unusual noises (grinding or whining) from the transmission
•Check engine light illuminated
•Fluid leaks underneath the vehicle
•Erratic shifting or inability to shift into higher gears

Diagnostic Steps

1
Check the transmission fluid level and condition.
2
Scan the vehicle’s computer for any stored error codes using an OBD-II scanner.
3
Inspect for external leaks around the transmission casing and seals.
4
Test the transmission fluid pressure with a gauge.
5
Perform a visual inspection of the transmission for signs of damage or wear.
6
Check the electrical connectors and wiring harness related to the transmission.

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
•Multimeter
•Drain pan

Parts Required

•Transmission fluid
•Transmission filter
•Gasket for the transmission pan

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the transmission fluid level and condition.
2
Scan the vehicle’s computer for any stored error codes using an OBD-II scanner.
3
Inspect for external leaks around the transmission casing and seals.
4
Test the transmission fluid pressure with a gauge.
5
Perform a visual inspection of the transmission for signs of damage or wear.
6
Check the electrical connectors and wiring harness related to the transmission.

Solution

1. Preparation

Gather tools and equipment required for the repair.
Ensure the vehicle is on a level surface and secure it with jack stands.
Disconnect the battery to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Remove the transmission dipstick and check fluid level.
If low, add the manufacturer-recommended transmission fluid.
If fluid is dark or has a burnt smell, perform a fluid change:
- Tools Required: Transmission fluid pump, new transmission fluid, funnel, drain pan.
- Safety Warning: Allow the transmission to cool before working on it.
- Place the drain pan under the transmission and remove the drain plug.
- Allow old fluid to drain completely, then replace the drain plug.
- Use the fluid pump to refill the transmission with new fluid through the dipstick tube.

3. Repair or Replace Transmission Components

If fluid issues are resolved but slipping persists, inspect the internal components:
- Remove the transmission pan.
- Inspect the filter and replace it if clogged.
- Check the condition of the clutch plates and bands; replace if worn.
- Tools Required: Socket set, torque wrench, gasket scraper, new transmission filter and gasket.
- Reassemble the transmission pan and torque to manufacturer specifications.

4. Electrical System Check

Inspect and repair any damaged wiring or connectors related to transmission sensors.
Test the transmission control module (TCM) for proper operation:
- Tools Required: Multimeter.
- Follow manufacturer-specific procedures to diagnose the TCM.