why does my Ford Explorer shudder when I accelerate

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

547 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 shuddering during acceleration in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool before removing spark plugs to prevent burns.

Symptoms

•Shuddering or vibration during acceleration
•Poor acceleration response
•Engine misfire or hesitation
•Unusual noises from the engine or transmission
•Check engine light illuminated

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any engine or transmission faults.
2
Inspect the engine mounts for wear or damage that could contribute to excessive movement.
3
Check the transmission fluid level and condition; look for signs of contamination or burnt fluid.
4
Test the spark plugs and ignition coils for proper function and replace if necessary.
5
Inspect the driveshaft and CV joints for damage or excessive play.
6
Examine the tires for uneven wear or balance issues that could affect acceleration.

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
•Jack and jack stands
•Multimeter
•Transmission fluid pump

Parts Required

•Spark plugs
•Ignition coils
•Transmission fluid
•Engine mounts (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any engine or transmission faults.
2
Inspect the engine mounts for wear or damage that could contribute to excessive movement.
3
Check the transmission fluid level and condition; look for signs of contamination or burnt fluid.
4
Test the spark plugs and ignition coils for proper function and replace if necessary.
5
Inspect the driveshaft and CV joints for damage or excessive play.
6
Examine the tires for uneven wear or balance issues that could affect acceleration.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, jack and jack stands, multimeter, transmission fluid.
Ensure the vehicle is parked on a flat, secure surface and engage the parking brake.

2. Replace Spark Plugs and Ignition Coils

Remove the engine cover if applicable.
Disconnect the negative battery terminal to prevent electrical shorts.
Sub-steps:
1. Remove the ignition coil connector and bolt.
2. Pull the ignition coil out of the spark plug well.
3. Use a spark plug socket to remove the old spark plugs.
4. Install new spark plugs, ensuring they are gapped correctly to manufacturer specifications.
5. Reinstall the ignition coils and reconnect the connectors.
Safety Warning: Ensure the engine is cool before removing spark plugs to prevent burns.

3. Check and Replace Transmission Fluid

Locate the transmission dipstick.
Sub-steps:
1. Remove the dipstick to check fluid level; add fluid if low.
2. If fluid is dark or has a burnt smell, drain the fluid and replace with new fluid as per manufacturer specifications.
3. Run the vehicle with the new fluid and check for leaks.
Tools Required: Transmission fluid pump, new transmission fluid.

4. Inspect and Replace Engine Mounts (if necessary)

Lift the vehicle using a jack and secure with jack stands.
Sub-steps:
1. Locate the engine mounts and check for cracks or separation.
2. Remove the bolts securing the damaged engine mount.
3. Install the new engine mount and torque bolts to manufacturer specifications.
4. Lower the vehicle back to the ground.
Tools Required: Socket set, torque wrench.