why does my Ford Explorer shudder when I accelerate from a stop?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

532 words

Problem Statement

Learn to diagnose and fix shuddering during acceleration 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.
•Allow the engine to cool before opening any components.

Symptoms

•Shuddering or vibrating during acceleration
•Engine hesitation or stumbling
•Increased noise from the drivetrain
•Poor acceleration response
•Possible check engine light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the engine mounts for wear or damage that could cause excessive movement.
3
Check the transmission fluid level and condition; look for signs of burning or contamination.
4
Examine the driveshaft and U-joints for any signs of wear or play.
5
Test the throttle position sensor (TPS) for proper operation with a multimeter.
6
Review the condition of the spark plugs and ignition coils for misfire issues.

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
•Multimeter
•Jack and jack stands

Parts Required

•Engine mounts (if needed)
•Transmission fluid
•Transmission filter
•Throttle position sensor (if needed)
•U-joints (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any stored trouble codes.
2
Inspect the engine mounts for wear or damage that could cause excessive movement.
3
Check the transmission fluid level and condition; look for signs of burning or contamination.
4
Examine the driveshaft and U-joints for any signs of wear or play.
5
Test the throttle position sensor (TPS) for proper operation with a multimeter.
6
Review the condition of the spark plugs and ignition coils for misfire issues.

Solution

1. Preparation

Gather tools and parts.
Disconnect the negative battery cable to ensure safety.
Allow the engine to cool before beginning repairs.

2. Inspect and Replace Engine Mounts

Sub-steps:
1. Raise the vehicle using a jack and secure it on jack stands.
2. Locate the engine mounts and inspect for cracks or excessive wear.
3. If damaged, remove the bolts securing the mounts and lift the engine slightly to replace them.
4. Install new engine mounts and torque bolts to manufacturer specifications.

3. Transmission Fluid Check and Change

Sub-steps:
1. Remove the transmission fluid dipstick and check the fluid level.
2. If low, add the appropriate transmission fluid (refer to the owner's manual for specifications).
3. If fluid is contaminated, drain the transmission pan and replace the fluid and filter.
4. Refill with new transmission fluid and check for leaks.

4. Inspect Driveshaft and U-joints

Sub-steps:
1. Visually inspect the driveshaft for any signs of damage or misalignment.
2. Check U-joints by attempting to move them; they should not have excessive play.
3. If defective, remove the driveshaft and replace the U-joints as necessary.
4. Reinstall the driveshaft and ensure proper alignment.

5. Test and Replace Throttle Position Sensor (if necessary)

Sub-steps:
1. Disconnect the sensor connector and use a multimeter to measure voltage at the sensor.
2. If readings are out of specification, remove the old TPS and install a new one.
3. Reconnect the sensor and clear any error codes from the computer.