my Toyota Corolla E170 (2013-2019) makes a knocking noise when I accelerate what's wrong

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

542 words

Problem Statement

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

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 the engine to cool before starting any inspection or repair work.

Symptoms

•Knocking noise audible during acceleration
•Possible vibration felt through the steering wheel
•Loss of power during acceleration
•Unusual engine performance
•Possible check engine light illumination

Diagnostic Steps

1
Scan the vehicle's OBD-II system for error codes using a professional scanner.
2
Inspect the engine mounts for wear or damage.
3
Check the transmission fluid level and condition.
4
Examine the exhaust system for loose components or leaks.
5
Inspect the suspension and drivetrain components for wear or damage.
6
Test drive the vehicle to replicate the noise and pinpoint its source.

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
•Jack stands
•Transmission fluid dipstick
•Wrench set
•Pry bar

Parts Required

•Engine mounts (if damaged)
•Transmission fluid (if low)
•Exhaust hangers (if damaged)
•Suspension components (if worn)

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for error codes using a professional scanner.
2
Inspect the engine mounts for wear or damage.
3
Check the transmission fluid level and condition.
4
Examine the exhaust system for loose components or leaks.
5
Inspect the suspension and drivetrain components for wear or damage.
6
Test drive the vehicle to replicate the noise and pinpoint its source.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery to prevent electrical shorts.

2. Inspect Engine Mounts

Tools Required: Socket set, jack stands
Sub-steps:
1. Raise the front of the vehicle using a jack and secure it with jack stands.
2. Visually inspect engine mounts for cracks or excessive wear.
3. Use a pry bar to check for excessive movement in the mounts.
4. If damaged, remove the old mounts and replace them with new ones, tightening bolts to manufacturer specifications.

3. Check Transmission Fluid

Tools Required: Transmission fluid dipstick, funnel
Sub-steps:
1. Locate and remove the transmission dipstick.
2. Check fluid level and condition; fluid should be reddish and clear.
3. If low, add the appropriate type of transmission fluid as per the owner’s manual.
4. If fluid is dark or has a burnt smell, consider a transmission fluid change.

4. Inspect Exhaust System

Tools Required: Wrench set, safety goggles
Sub-steps:
1. Visually inspect exhaust hangers and brackets for looseness or damage.
2. Tighten any loose bolts or replace damaged hangers.
3. Check for any exhaust leaks at joints or connections using a smoke test if available.

5. Inspect Suspension and Drivetrain

Tools Required: Jack stands, socket set
Sub-steps:
1. Raise the vehicle and support it on jack stands.
2. Inspect control arms, sway bar links, and CV joints for wear or damage.
3. Replace any worn or damaged components, ensuring to torque bolts to specifications.