why does my Toyota Corolla E170 (2013-2019) make a knocking sound

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

508 words

Problem Statement

Diagnose and fix knocking sound in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Suspension

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 opening the oil drain plug.

Symptoms

•Knocking sound during acceleration or deceleration
•Noise increases with engine RPM
•Poor engine performance or misfires
•Vibration felt through the steering wheel or chassis
•Potential rattling noise from the suspension over bumps

Diagnostic Steps

1
Inspect the engine bay for loose or damaged components, such as engine mounts or heat shields.
2
Scan for error codes using an OBD-II scanner to identify any engine-related issues.
3
Perform a visual inspection of the suspension components, including struts, control arms, and bushings.
4
Check the oil level and condition; low or dirty oil can lead to engine noise.
5
Conduct a test drive to replicate the knocking sound under various driving conditions.

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

•Socket set
•Torque wrench
•OBD-II scanner
•Oil drain pan
•Oil filter wrench

Parts Required

•Engine oil (0W-20)
•Oil filter
•Replacement struts
•Control arms
•Bushings

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Diagnostic Steps

1
Inspect the engine bay for loose or damaged components, such as engine mounts or heat shields.
2
Scan for error codes using an OBD-II scanner to identify any engine-related issues.
3
Perform a visual inspection of the suspension components, including struts, control arms, and bushings.
4
Check the oil level and condition; low or dirty oil can lead to engine noise.
5
Conduct a test drive to replicate the knocking sound under various driving conditions.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and engage the parking brake.

2. Inspect and Tighten Engine Mounts

Sub-steps:
1. Identify and locate the engine mounts (usually at the front and rear of the engine).
2. Use a socket set to check all mounting bolts for tightness.
3. Tighten any loose bolts to the manufacturer's torque specifications (typically 40-80 ft-lbs depending on the mount).
Tools Required: Socket set, torque wrench

3. Replace Worn Suspension Components

Sub-steps:
1. Visually inspect suspension parts for wear, particularly the struts and control arms.
2. If any components are damaged, remove them using a socket set and replace with new parts.
3. Ensure to use torque specifications when installing new suspension components (typically 50-100 ft-lbs).
Tools Required: Socket set, torque wrench
Parts Required: Replacement struts, control arms, or bushings as necessary

4. Engine Oil Change (if needed)

Sub-steps:
1. Check the engine oil level using the dipstick; top off or replace if low or dirty.
2. Drain the old oil using an oil drain pan and replace with manufacturer-recommended oil (usually 0W-20 for the Corolla).
3. Replace the oil filter using an oil filter wrench.
Tools Required: Oil drain pan, oil filter wrench, socket set
Parts Required: Engine oil (0W-20), oil filter