why does my Ford Explorer Fifth Generation (2011-2019) make a hissing noise when I accelerate?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

480 words

Problem Statement

Learn how to diagnose and fix hissing noise during acceleration in Ford Explorer (2011-2019). 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 down before inspecting the intake or exhaust system.

Symptoms

•Hissing noise becomes more pronounced during acceleration
•Possible loss of power or sluggish acceleration
•Check engine light may illuminate
•Increased fuel consumption
•Unusual engine vibrations

Diagnostic Steps

1
Inspect the air intake system for any cracks or loose connections.
2
Check for vacuum leaks using a smoke machine or carburetor cleaner.
3
Scan for error codes using an OBD-II scanner to identify any related issues.
4
Examine the exhaust system for leaks, especially at the manifold and joints.
5
Test the throttle body operation for proper function.

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
•Smoke machine (for vacuum leak test)
•Screwdrivers (flathead and Phillips)
•Socket set
•Throttle body cleaner

Parts Required

•Replacement air intake duct or hoses (if damaged)
•Exhaust gaskets or pipes (if leaks are found)

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Diagnostic Steps

1
Inspect the air intake system for any cracks or loose connections.
2
Check for vacuum leaks using a smoke machine or carburetor cleaner.
3
Scan for error codes using an OBD-II scanner to identify any related issues.
4
Examine the exhaust system for leaks, especially at the manifold and joints.
5
Test the throttle body operation for proper function.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the negative battery terminal to avoid electrical shorts.
Ensure the vehicle is parked on a flat surface and the engine is cool.

2. Inspect Air Intake System

Remove the air intake duct by loosening the hose clamps with a screwdriver.
Inspect the duct for cracks or damage that may allow air to escape.
Replace any damaged components with OEM parts.

3. Check for Vacuum Leaks

Use a smoke machine to introduce smoke into the intake system.
Observe for any smoke escaping from cracks or loose connections.
If a leak is found, replace the faulty hose or gasket.

4. Examine Exhaust System

Inspect the exhaust manifold and pipe connections for any leaks or holes.
Use a flashlight to look for signs of exhaust fumes escaping.
If leaks are detected, replace gaskets or damaged pipes as necessary.

5. Test Throttle Body

Remove the throttle body (if necessary) by disconnecting the electrical connector and loosening the mounting bolts.
Clean the throttle body with throttle body cleaner and a soft cloth.
Reinstall the throttle body and ensure all connections are secure.