how to fix Ford Explorer Fifth Generation (2011-2019) delayed transmission shifting

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

586 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 delayed transmission shifting 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 the battery before working on any electrical systems.
•Allow the engine and transmission to cool before performing any maintenance.

Symptoms

•Delayed or sluggish gear changes
•Harsh or abrupt shifting
•Engine RPMs increasing without corresponding acceleration
•Check engine light illuminated
•Unusual noises from the transmission
•Vehicle struggles to accelerate smoothly

Diagnostic Steps

1
Scan the vehicle for error codes using an OBD-II scanner to identify any transmission-related trouble codes.
2
Check the transmission fluid level and condition; look for signs of contamination or burning.
3
Inspect the transmission filter for clogs or restrictions.
4
Examine the transmission control module (TCM) connections for corrosion or loose wiring.
5
Test the throttle position sensor (TPS) for proper operation using a multimeter.
6
Verify the operation of the solenoids within the transmission by checking for electrical signals.

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
•Funnel
•Drain pan
•Multimeter
•Screwdrivers

Parts Required

•Transmission fluid (Mercon LV)
•Transmission filter
•Transmission pan gasket
•Throttle position sensor (if required)
•Transmission control module (if required)

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Diagnostic Steps

1
Scan the vehicle for error codes using an OBD-II scanner to identify any transmission-related trouble codes.
2
Check the transmission fluid level and condition; look for signs of contamination or burning.
3
Inspect the transmission filter for clogs or restrictions.
4
Examine the transmission control module (TCM) connections for corrosion or loose wiring.
5
Test the throttle position sensor (TPS) for proper operation using a multimeter.
6
Verify the operation of the solenoids within the transmission by checking for electrical signals.

Solution

1. Preparation

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

2. Check and Change Transmission Fluid

Tools Required: Socket set, funnel, drain pan.
Sub-steps:
1. Locate the transmission fluid dipstick and remove it.
2. Using a drain pan, drain the old transmission fluid by removing the transmission pan bolts.
3. Replace the transmission filter if necessary.
4. Reinstall the transmission pan with new gasket and torque the bolts to the manufacturer's specifications (typically around 8-10 ft-lbs).
5. Fill the transmission with new fluid (Mercon LV is typically recommended) using a funnel through the dipstick tube until it reaches the proper level.

3. Inspect and Replace Transmission Control Module (TCM) (if needed)

Tools Required: Socket set, screwdrivers.
Sub-steps:
1. Locate the TCM, usually found near the transmission or under the dashboard.
2. Disconnect the electrical connectors carefully.
3. Remove the TCM mounting bolts and take out the TCM.
4. Install the new TCM by reversing the removal process and reconnecting the electrical connectors.

4. Throttle Position Sensor (TPS) Inspection/Replacement

Tools Required: Multimeter, socket set.
Sub-steps:
1. Locate the TPS on the throttle body.
2. Disconnect the TPS electrical connector.
3. Using a multimeter, check the resistance and voltage output of the TPS while moving the throttle plate.
4. If the TPS is faulty, remove the mounting screws and replace it with a new unit.
5. Reconnect the electrical connector.