why does my Toyota Corolla E170 (2013-2019) make a hissing sound while driving?

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

488 words

Problem Statement

Discover the causes of a hissing sound while driving your 2013-2019 Toyota Corolla E170. Follow our diagnostic steps and repair guide for effective solutions.

Affected Component

Cooling System

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 down before inspecting the cooling system to prevent burns.

Symptoms

•Hissing sound that varies with vehicle speed
•Possible loss of power during acceleration
•Air conditioning performance issues
•Increased engine temperature
•Unusual changes in fuel economy

Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify any related faults.
2
Inspect the serpentine belt for wear or damage, listening for any noise while the engine is running.
3
Examine the intake system for vacuum leaks, paying special attention to hoses and connections.
4
Inspect the cooling system for any leaks, including the radiator and hoses.
5
Test the operation of the air conditioning system to determine if the sound is related to the AC compressor.

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
•Vacuum gauge
•Cooling system pressure tester
•Refrigerant gauge
•Smoke machine (optional)

Parts Required

•Serpentine belt
•Vacuum hoses
•AC compressor (if applicable)
•Coolant (if refilling is necessary)

Related Faults

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Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify any related faults.
2
Inspect the serpentine belt for wear or damage, listening for any noise while the engine is running.
3
Examine the intake system for vacuum leaks, paying special attention to hoses and connections.
4
Inspect the cooling system for any leaks, including the radiator and hoses.
5
Test the operation of the air conditioning system to determine if the sound is related to the AC compressor.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface with the engine off and cooled down.
Disconnect the battery to avoid any electrical issues.

2. Inspect and Replace Serpentine Belt

Visual Inspection: Examine the serpentine belt for cracks, fraying, or signs of wear.
Remove Belt: Use a socket set to relieve tension on the serpentine belt tensioner and slide the belt off.
Install New Belt: Route the new serpentine belt according to the belt routing diagram found on the engine bay, ensuring it is seated correctly on all pulleys.
Reapply Tension: Reapply tension to the belt using the tensioner.

3. Address Vacuum Leaks

Inspect Hoses: Visually inspect all vacuum hoses for cracks or disconnections.
Vacuum Test: Use a smoke machine or soapy water to identify leaks by looking for bubbles.
Replace Damaged Hoses: Cut away damaged sections of hose and replace with new vacuum hoses as needed.

4. Inspect Cooling System

Visual Inspection: Check all hoses and the radiator for signs of leaks or coolant loss.
Pressure Test: Use a cooling system pressure tester to identify leaks under pressure.
Repair Leaks: Replace any damaged hoses or radiator components as necessary.

5. Test Air Conditioning System

Check Refrigerant Level: Use a refrigerant gauge to check the AC system pressure.
Inspect AC Compressor: Listen for unusual noises from the AC compressor while the system is running.
Replace Compressor if Necessary: If the compressor is faulty, remove it using a socket set and install a new one.

Tools Required:

OBD-II scanner
Socket set
Vacuum gauge
Cooling system pressure tester
Refrigerant gauge
Smoke machine (optional)

Parts Required:

Serpentine belt
Vacuum hoses
AC compressor (if applicable)
Coolant (if refilling is necessary)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems.
Allow the engine to cool down before inspecting the cooling system to prevent burns.