what could cause my Ford Explorer to have a rough transmission shift

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

570 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 rough transmission shifts 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

•Always wear safety glasses and gloves; allow the engine to cool before working on the transmission.
•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening the transmission.

Symptoms

•Harsh or jerky shifting between gears
•Delayed engagement when shifting into drive or reverse
•Unusual noises during shifting (grinding or clunking sounds)
•Check engine light illuminated
•Increased RPMs without corresponding vehicle speed

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related fault codes.
2
Check transmission fluid level and condition; look for signs of contamination or burning smell.
3
Inspect the transmission fluid for proper color and consistency (should be red and not dark or burnt).
4
Examine the transmission control module (TCM) for any electrical issues or faulty connections.
5
Test the throttle position sensor (TPS) and vehicle speed sensor (VSS) for proper operation.
6
Inspect the transmission mounts for wear or damage.

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
•Transmission fluid pump
•Torque wrench
•Multimeter
•Fluid catch pan

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Throttle position sensor (if faulty)
•Vehicle speed sensor (if faulty)

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 transmission fluid level and condition; look for signs of contamination or burning smell.
3
Inspect the transmission fluid for proper color and consistency (should be red and not dark or burnt).
4
Examine the transmission control module (TCM) for any electrical issues or faulty connections.
5
Test the throttle position sensor (TPS) and vehicle speed sensor (VSS) for proper operation.
6
Inspect the transmission mounts for wear or damage.

Solution

1. Preparation

Gather tools and parts. Ensure the vehicle is parked on a level surface, and engage the parking brake.
Tools Required: OBD-II scanner, socket set, transmission fluid pump, torque wrench, multimeter, fluid catch pan.
Safety Warnings: Always wear safety glasses and gloves; allow the engine to cool before working on the transmission.

2. Check and Replace Transmission Fluid

Sub-steps:
1. Remove the transmission dipstick and check the fluid level.
2. If low, add the correct type of transmission fluid (consult owner’s manual for specifications).
3. If the fluid appears burnt or contaminated, proceed to drain the old fluid.
4. Locate the transmission pan and remove the bolts using a socket set; place a fluid catch pan underneath.
5. Allow the old fluid to drain completely and replace the transmission filter if applicable.
6. Reinstall the transmission pan, torque the bolts to manufacturer specifications, and refill with new fluid.

3. Inspect and Replace Faulty Sensors

Sub-steps:
1. Use a multimeter to test the throttle position sensor (TPS) and vehicle speed sensor (VSS) for proper voltage output.
2. If either sensor is faulty, disconnect the electrical connector and remove the sensor.
3. Install the new sensor and reconnect the electrical connector.
4. Clear any transmission-related error codes using the OBD-II scanner.

4. Address Transmission Control Module Issues

Sub-steps:
1. Inspect wiring harnesses and connectors leading to the transmission control module (TCM) for damage or corrosion.
2. If necessary, replace damaged connectors and ensure a secure connection.
3. If the TCM is suspected to be faulty, consult a professional for reprogramming or replacement.