why does my Ford Explorer shudder when I accelerate

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

609 words

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

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Ensure the engine is cool before performing any work on the engine or transmission.

Symptoms

•Shuddering or vibrating sensation during acceleration
•Decreased power output or sluggish acceleration
•Unusual noises (grinding or clunking) when accelerating
•Check engine light illuminated (if applicable)
•Poor fuel economy
•Transmission slipping or harsh shifting

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any engine or transmission-related issues.
2
Inspect the drivetrain components (u-joints, driveshaft, and CV joints) for wear or damage.
3
Check the transmission fluid level and condition for proper operation.
4
Test the engine mounts for excessive wear or failure that could lead to shuddering.
5
Inspect spark plugs and ignition system for misfires that could affect acceleration.
6
Check fuel pressure and inspect the fuel injectors for clogs or malfunctions.

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
•Jack and jack stands
•Transmission fluid pump (if needed)

Parts Required

•U-joints (if worn)
•CV joints (if worn)
•Transmission fluid (Mercon LV or specified type)
•Transmission filter (if applicable)
•Engine mounts (if damaged)
•Spark plugs

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any engine or transmission-related issues.
2
Inspect the drivetrain components (u-joints, driveshaft, and CV joints) for wear or damage.
3
Check the transmission fluid level and condition for proper operation.
4
Test the engine mounts for excessive wear or failure that could lead to shuddering.
5
Inspect spark plugs and ignition system for misfires that could affect acceleration.
6
Check fuel pressure and inspect the fuel injectors for clogs or malfunctions.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a level surface and the engine is turned off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Worn Drivetrain Components

Sub-steps:
1. Elevate the vehicle using a jack and secure it on jack stands.
2. Visually inspect the u-joints and CV joints for signs of wear or damage.
3. Replace any worn joints using a socket set and torque to manufacturer specifications (typically around 30-50 ft-lbs depending on the component).
4. Inspect the driveshaft for bends or cracks; replace if necessary.

3. Transmission Fluid Check and Replacement

Sub-steps:
1. Remove the transmission fluid dipstick and check the fluid level; add fluid if low.
2. If fluid is dark or burnt, drain the transmission fluid using a transmission pan and replace it with the recommended type (usually Mercon LV for Ford transmissions).
3. Replace the transmission filter if applicable.
4. Refill the transmission with new fluid to the appropriate level.

4. Engine Mount Inspection and Replacement

Sub-steps:
1. Inspect engine mounts for cracks or excessive movement.
2. If damaged, support the engine using a jack or engine support bar.
3. Remove the bolts securing the engine mounts and replace with new mounts, tightening to the manufacturer's torque specifications.

5. Spark Plug and Ignition System Check

Sub-steps:
1. Remove spark plugs using a spark plug socket and inspect for wear or carbon buildup.
2. Replace with new spark plugs as per manufacturer specifications (usually around 0.030 inches for gap).
3. Inspect ignition coils for damage and replace if necessary.