why is my Toyota Corolla E170 (2013-2019) making a knocking noise when accelerating

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

540 words

Problem Statement

Learn how to diagnose and fix knocking noise during acceleration in Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is securely lifted and supported before working underneath.
•Disconnect the battery before working on any electrical components.

Symptoms

•Knocking noise audible during acceleration
•Vibration felt in the steering wheel
•Decreased power output
•Unusual engine performance (e.g., rough running)
•Possible check engine light illumination

Diagnostic Steps

1
Inspect the engine bay for loose components or foreign objects.
2
Scan for error codes using an OBD-II scanner to identify potential engine issues.
3
Check motor and transmission mounts for wear or damage.
4
Inspect the exhaust system for loose connections or damage.
5
Test drive the vehicle to replicate the noise and identify the speed range at which it occurs.
6
Inspect suspension components, including struts, shocks, and control arms for wear or damage.

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
•Inspection mirror
•Wrench set
•Exhaust clamp tool
•Pry bar

Parts Required

•Motor mounts
•Transmission mounts
•Exhaust hangers or clamps (if damaged)
•Worn suspension components (if needed)

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Diagnostic Steps

1
Inspect the engine bay for loose components or foreign objects.
2
Scan for error codes using an OBD-II scanner to identify potential engine issues.
3
Check motor and transmission mounts for wear or damage.
4
Inspect the exhaust system for loose connections or damage.
5
Test drive the vehicle to replicate the noise and identify the speed range at which it occurs.
6
Inspect suspension components, including struts, shocks, and control arms for wear or damage.

Solution

1. Preparation

Gather tools and parts.
Ensure the vehicle is parked on a level surface and engage the parking brake.
Allow the engine to cool down before starting work.

2. Inspect and Secure Engine Components

Tools Required: Socket set, torque wrench, inspection mirror
Check for any loose bolts on engine components such as the intake manifold and exhaust manifold.
Tighten any loose bolts to the manufacturer's torque specifications.
Inspect and secure any exposed wiring or hoses that may be causing the noise.

3. Replace Worn Motor/Transmission Mounts

Tools Required: Socket set, jack and jack stands, new mounts
Using the jack, lift the vehicle and secure it with jack stands.
Remove the bolts securing the mounts to the engine and chassis.
Replace the mounts with new ones, ensuring proper alignment.
Torque the bolts to the specified value according to the manufacturer's specifications.

4. Inspect and Repair Exhaust System

Tools Required: Wrench set, exhaust clamp tool
Examine the exhaust system for any loose clamps or broken hangers.
Tighten any loose clamps or replace broken hangers to secure the exhaust.
If necessary, replace any damaged sections of the exhaust system.

5. Check Suspension Components

Tools Required: Socket set, pry bar, torque wrench
Inspect suspension parts for signs of wear, such as bushings, struts, and control arms.
Replace any worn components as needed, ensuring all bolts are torqued to specifications.