why does my Toyota Corolla E170 (2013-2019) make a hissing noise when accelerating

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

545 words

Problem Statement

Learn to diagnose and fix hissing noise during acceleration in 2013-2019 Toyota Corolla E170. Step-by-step guide with symptoms and solutions.

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 engine to cool before opening the intake system.

Symptoms

•Hissing noise during acceleration
•Possible loss of power or sluggish acceleration
•Engine misfire or rough running
•Check engine light may illuminate
•Increased fuel consumption

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner for any error codes.
2
Inspect vacuum lines and hoses for any signs of wear, cracks, or disconnections.
3
Check the intake manifold for any leaks using a smoke test or carburetor cleaner.
4
Listen for abnormal noises around the engine bay to pinpoint the source of the sound.
5
Test the throttle body for proper operation and signs of carbon buildup.
6
Inspect the air filter for blockages that could affect airflow.

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
•Pliers
•Throttle body cleaner
•Smoke machine (optional)

Parts Required

•Replacement vacuum hoses
•Intake manifold gasket
•Throttle body cleaner

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle's onboard computer using an OBD-II scanner for any error codes.
2
Inspect vacuum lines and hoses for any signs of wear, cracks, or disconnections.
3
Check the intake manifold for any leaks using a smoke test or carburetor cleaner.
4
Listen for abnormal noises around the engine bay to pinpoint the source of the sound.
5
Test the throttle body for proper operation and signs of carbon buildup.
6
Inspect the air filter for blockages that could affect airflow.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the engine is cool.
Disconnect the battery to avoid any electrical issues.

2. Inspect and Replace Vacuum Hoses

Sub-steps:
- Visually inspect all vacuum hoses for cracks or disconnections.
- Remove any damaged hoses using pliers.
- Replace with OEM hoses of the same diameter.
- Secure all connections with clamps if necessary.

3. Repair Intake Manifold Leak

Sub-steps:
- Remove the engine cover (if applicable) using a socket set.
- Disconnect the air intake duct from the throttle body.
- Perform a smoke test to identify leaks around the intake manifold.
- If a leak is detected, remove the intake manifold by loosening the bolts with a torque wrench (follow the manufacturer’s specifications for torque values).
- Clean the mating surfaces and replace the gasket if damaged.
- Reinstall the intake manifold and torque the bolts to the specified value.

4. Clean Throttle Body

Sub-steps:
- Remove the throttle body from the intake manifold (if necessary).
- Use throttle body cleaner and a soft cloth to clean the interior surfaces.
- Ensure that the throttle plate moves freely and is not sticking.
- Reinstall the throttle body and reconnect any disconnected hoses or electrical connectors.

5. Reconnect Battery and Test

Reconnect the battery terminals securely.
Start the engine and allow it to idle to check for any persistent noises or leaks.
Test drive the vehicle to confirm that the hissing noise is resolved.