how to fix a loud exhaust in Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

547 words

Problem Statement

Learn how to diagnose and fix loud exhaust noise in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Exhaust 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 before touching any exhaust components to avoid burns.

Symptoms

•Loud exhaust noise, particularly during acceleration
•Reduced fuel efficiency
•Vibration felt in the cabin or under the vehicle
•Possible check engine light illumination
•Unusual smells, possibly indicating rich fuel mixture

Diagnostic Steps

1
Inspect the entire exhaust system visually for visible damage or rust, focusing on welds and joints.
2
Use an OBD-II scanner to check for any stored diagnostic trouble codes (DTCs) related to the exhaust system.
3
Listen for exhaust leaks by running the engine and checking for hissing sounds near the exhaust manifold, catalytic converter, and muffler.
4
Check the exhaust hangers and mounts for wear or damage that may allow excessive movement of the exhaust system.
5
Inspect the catalytic converter for blockages or damage that could contribute to noise.

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
•Jack and jack stands
•Exhaust clamps

Parts Required

•Exhaust hangers (if damaged)
•Exhaust pipes (if damaged)
•Muffler (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the entire exhaust system visually for visible damage or rust, focusing on welds and joints.
2
Use an OBD-II scanner to check for any stored diagnostic trouble codes (DTCs) related to the exhaust system.
3
Listen for exhaust leaks by running the engine and checking for hissing sounds near the exhaust manifold, catalytic converter, and muffler.
4
Check the exhaust hangers and mounts for wear or damage that may allow excessive movement of the exhaust system.
5
Inspect the catalytic converter for blockages or damage that could contribute to noise.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is on a flat surface and secure it with wheel chocks.
Disconnect the battery to prevent any electrical issues.

2. Raise the Vehicle

Use a jack and jack stands to lift the vehicle safely.
Ensure the vehicle is stable before proceeding.

3. Inspect and Replace Exhaust Components

Inspect Hangers and Mounts:
- Check all exhaust hangers for cracks or degradation.
- Replace any damaged hangers using a socket set and torque to manufacturer's specifications (usually around 18-25 ft-lbs).
Inspect Exhaust Pipes:
- Look for holes or rusted areas on the exhaust pipes.
- If damage is found, remove the affected pipe section by loosening the clamps and bolts.
- Install new exhaust pipe sections, ensuring proper alignment and securing with clamps.
Check the Muffler:
- Inspect the muffler for internal damage or rust.
- If the muffler is faulty, remove it by disconnecting the inlet and outlet connections.
- Install a new muffler, ensuring it is properly aligned and secured.

4. Reconnect Battery and Lower Vehicle

Reconnect the battery terminals, ensuring a clean and tight connection.
Carefully lower the vehicle back to the ground.

5. Final Check

Start the vehicle and listen for any remaining exhaust noise.
Ensure all components are secure and there are no leaks.