why is my Ford Explorer bucking while driving?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

572 words

Problem Statement

Learn how to diagnose and fix bucking issues in Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, 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 systems.
•Allow the engine to cool before inspecting the intake system.

Symptoms

•Bucking or jerking motion during acceleration
•Loss of power when applying throttle
•Engine misfires or rough running
•Check engine light illuminated
•Poor fuel economy
•Increased exhaust emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the spark plugs and ignition coils for signs of wear or damage.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump and filter are functioning correctly.
4
Examine the air filter for clogs or restrictions that could affect airflow.
5
Inspect the throttle body for carbon buildup or mechanical issues.
6
Check for vacuum leaks in the intake system that could cause air-fuel mixture problems.

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
•Multimeter
•Socket set
•Fuel pressure gauge
•Throttle body cleaner

Parts Required

•Spark plugs
•Ignition coils
•Fuel filter (if needed)

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 stored trouble codes.
2
Inspect the spark plugs and ignition coils for signs of wear or damage.
3
Check fuel pressure using a fuel pressure gauge to ensure the fuel pump and filter are functioning correctly.
4
Examine the air filter for clogs or restrictions that could affect airflow.
5
Inspect the throttle body for carbon buildup or mechanical issues.
6
Check for vacuum leaks in the intake system that could cause air-fuel mixture problems.

Solution

1. Preparation

Gather tools and parts: OBD-II scanner, multimeter, socket set, fuel pressure gauge, and replacement spark plugs or coils if needed.
Disconnect the negative battery terminal to ensure safety while working on the vehicle.

2. Address Ignition System Issues

Inspect Spark Plugs and Coils:
1. Remove the engine cover if applicable.
2. Disconnect the ignition coil connectors.
3. Unscrew and remove the ignition coils.
4. Inspect the spark plugs for wear, carbon buildup, or damage.
5. Replace spark plugs if they are worn (recommended gap: 0.054 inches) and swap out faulty ignition coils.

3. Check Fuel System

Test Fuel Pressure:
1. Connect the fuel pressure gauge to the fuel rail Schrader valve.
2. Turn the ignition to the "on" position (without starting) to check for initial pressure.
3. Compare the reading to the manufacturer specifications (usually between 30-50 psi).
4. If low, inspect the fuel pump and replace the fuel filter if it is clogged.

4. Clean or Replace Air Intake Components

Throttle Body Cleaning:
1. Disconnect the air intake duct from the throttle body.
2. Spray throttle body cleaner on a clean rag and wipe the inside of the throttle body to remove deposits.
3. Reattach the air intake duct securely.

5. Inspect for Vacuum Leaks

Check Intake System:
1. Visually inspect all hoses connected to the intake manifold for cracks or disconnections.
2. Use a smoke machine or spray soapy water around the hoses and intake manifold while the engine is running to detect leaks.