my Ford Explorer Fifth Generation (2011-2019) is making a loud hissing noise what's causing it

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

513 words

Problem Statement

Learn how to diagnose and fix a loud hissing noise in Ford Explorer (2011-2019). 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 components.
•Allow the engine to cool completely before inspecting the cooling system to avoid burns.

Symptoms

•Loud hissing noise from the engine compartment
•Possible loss of power during acceleration
•Engine overheating
•Poor fuel economy
•Check engine light illuminated (if applicable)

Diagnostic Steps

1
Inspect the engine bay for any visible signs of air leaks, particularly in vacuum hoses and intake components.
2
Use an OBD-II scanner to check for any stored error codes that might indicate underlying issues.
3
Listen closely to identify the exact source of the hissing noise by revving the engine while stationary.
4
Check the condition of the serpentine belt for any signs of wear or damage, as a slipping belt can produce hissing sounds.
5
Inspect the cooling system for leaks, particularly around the radiator and hoses, as coolant escaping can create a hissing noise.
6
Examine the exhaust system for any leaks, which may also produce a hissing sound.

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
•Pliers
•Hose clamp tool
•Torque wrench

Parts Required

•Vacuum hoses (if needed)
•Serpentine belt (if needed)
•Radiator hoses (if needed)
•Exhaust repair kit or gaskets (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the engine bay for any visible signs of air leaks, particularly in vacuum hoses and intake components.
2
Use an OBD-II scanner to check for any stored error codes that might indicate underlying issues.
3
Listen closely to identify the exact source of the hissing noise by revving the engine while stationary.
4
Check the condition of the serpentine belt for any signs of wear or damage, as a slipping belt can produce hissing sounds.
5
Inspect the cooling system for leaks, particularly around the radiator and hoses, as coolant escaping can create a hissing noise.
6
Examine the exhaust system for any leaks, which may also produce a hissing sound.

Solution

1. Preparation

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

2. Inspect and Replace Vacuum Hoses

Sub-steps:
1. Locate all vacuum hoses in the engine compartment.
2. Visually inspect for cracks, disconnections, or any signs of wear.
3. If any hoses are damaged, remove them using pliers and replace with new hoses.
4. Ensure all connections are secure and replace any clamps if necessary.

3. Check and Replace the Serpentine Belt

Sub-steps:
1. Locate the serpentine belt routing diagram (usually found on a sticker in the engine bay).
2. Use a socket and ratchet to relieve tension on the belt tensioner and remove the belt.
3. Inspect the belt for any signs of wear, fraying, or glazing.
4. If damaged, install a new belt by routing it according to the diagram and reapplying tension.

4. Inspect and Repair Cooling System

Sub-steps:
1. Visually inspect all hoses connected to the radiator and engine for leaks.
2. If leaks are found, replace the affected hoses using a hose clamp tool.
3. Check the radiator for any cracks or leaks; if necessary, replace the radiator.

5. Examine Exhaust System for Leaks

Sub-steps:
1. Inspect the exhaust manifold and piping for any signs of rust or holes.
2. If leaks are detected, replace any damaged sections of the exhaust or use exhaust sealant for minor leaks.
3. Recheck connections and gaskets for proper sealing.

Tools Required:

OBD-II scanner
Socket set
Pliers
Hose clamp tool
Torque wrench (if applicable)

Parts Required:

Vacuum hoses (if needed)
Serpentine belt (if needed)
Radiator hoses (if needed)
Exhaust repair kit or gaskets (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical components.
Allow the engine to cool completely before inspecting the cooling system to avoid burns.