why does my Ford Explorer shudder when accelerating

Ford Explorer Fifth Generation (2011-2019)

Error Codes

3-5 hours

Time

medium

Difficulty

medium

Severity

3 min read

488 words

Problem Statement

Learn how to diagnose and fix shuddering during acceleration in Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Drivetrain

Estimated Time

3-5 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is securely lifted and supported before working underneath.
•Disconnect the battery to prevent electrical shorts or shocks.

Symptoms

•Shuddering or vibrating sensation while accelerating
•Increased engine RPMs without corresponding speed increase
•Poor acceleration or sluggish performance
•Possible check engine light illumination
•Unusual noises from the engine or drivetrain
•Vibrations felt through the steering wheel or floorboard

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes.
2
Inspect the engine mounts visually for signs of wear or damage.
3
Check the condition of the transmission fluid for proper level and contamination.
4
Test the driveshaft and CV joints for play or wear.
5
Examine the fuel system, including the fuel filter and pump pressure.
6
Inspect spark plugs and ignition system components for wear or misfire.

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
•Transmission fluid pump
•Fuel pressure gauge

Parts Required

•Engine mounts
•Transmission fluid and filter
•Driveshaft or CV joint (if necessary)
•Fuel filter

Related Faults

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Symptoms

•Shuddering or vibrating sensation while accelerating

•Increased engine RPMs without corresponding speed increase

•Poor acceleration or sluggish performance

•Possible check engine light illumination

•Unusual noises from the engine or drivetrain

•Vibrations felt through the steering wheel or floorboard

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fault codes.
2
Inspect the engine mounts visually for signs of wear or damage.
3
Check the condition of the transmission fluid for proper level and contamination.
4
Test the driveshaft and CV joints for play or wear.
5
Examine the fuel system, including the fuel filter and pump pressure.
6
Inspect spark plugs and ignition system components for wear or misfire.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a level surface with the parking brake engaged.
Disconnect the negative battery terminal to prevent electrical issues during repair.

2. Inspect and Replace Engine Mounts

Sub-steps:
1. Raise the vehicle securely using jack stands.
2. Locate the engine mounts (typically found on either side of the engine).
3. Visually inspect mounts for cracks or separation.
4. Remove mounting bolts using a socket set.
5. Replace damaged mounts with new ones and torque to manufacturer specifications (usually around 50-65 ft-lbs).

3. Transmission Fluid Check and Replacement

Sub-steps:
1. Locate the transmission dipstick and check fluid level.
2. If fluid is low, add the correct type of transmission fluid as specified in the owner's manual.
3. If fluid is dark or burnt, replace the fluid and filter:
  - Remove the transmission pan and drain fluid.
  - Replace the filter and gasket.
  - Reinstall the pan and refill with new fluid.

4. Inspect and Repair Driveshaft/CV Joints

Sub-steps:
1. Examine the driveshaft for any visible damage or excessive play.
2. Check CV joints for tears or leaks in the boot.
3. If damaged, replace the driveshaft or CV joints:
  - Remove bolts securing the driveshaft to the differential and transmission.
  - Install the new component and torque to specifications.

5. Fuel System Inspection

Sub-steps:
1. Check the fuel filter for clogs; replace if necessary.
2. Test fuel pressure at the fuel rail using a fuel pressure gauge.
3. If pressure is low, replace the fuel pump as needed.

Tools Required:

OBD-II scanner
Socket set
Torque wrench
Transmission fluid pump
Fuel pressure gauge

Parts Required:

Engine mounts
Transmission fluid and filter
Driveshaft or CV joint (if necessary)
Fuel filter

Estimated Repair Time: 3-5 hours

Safety Warnings:

Ensure the vehicle is securely lifted and supported before working underneath.
Disconnect the battery to prevent electrical shorts or shocks.