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

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

484 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

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before inspecting the exhaust system.

Symptoms

•Knocking noise when accelerating
•Possible vibration felt in the cabin
•Decreased engine performance
•Unusual fluctuations in RPM
•Check engine light may illuminate

Diagnostic Steps

1
Inspect the engine mounts for wear or damage.
2
Check for loose or damaged exhaust components.
3
Use an OBD-II scanner to check for any stored error codes.
4
Inspect the transmission for any signs of slippage or damage.
5
Examine suspension components, including struts and bushings, for wear.
6
Test drive the vehicle to replicate and pinpoint the noise location.

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
•Jack and jack stands
•Inspection mirror

Parts Required

•Engine mounts
•Exhaust hangers or brackets
•Transmission fluid

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Diagnostic Steps

1
Inspect the engine mounts for wear or damage.
2
Check for loose or damaged exhaust components.
3
Use an OBD-II scanner to check for any stored error codes.
4
Inspect the transmission for any signs of slippage or damage.
5
Examine suspension components, including struts and bushings, for wear.
6
Test drive the vehicle to replicate and pinpoint the noise location.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface and the engine is off.
Gather all necessary tools and parts before beginning the repair.

2. Inspect and Replace Engine Mounts

Sub-steps:
- Lift the vehicle using a jack and secure it with jack stands.
- Locate the engine mounts (typically found at the front and rear of the engine).
- Inspect each mount for cracks, separation, or excessive wear.
- If damaged, remove the bolts securing the mount to the engine and the frame.
- Replace with new engine mounts, tightening bolts to the manufacturer’s specified torque (typically around 50-60 ft-lbs).

3. Inspect and Repair Exhaust System

Sub-steps:
- Check the exhaust system for any loose brackets or hangers.
- Inspect for cracks or holes in the exhaust pipes and muffler.
- Tighten any loose bolts or replace damaged components as needed.

4. Check Transmission and Suspension

Sub-steps:
- Inspect the transmission fluid level and condition; if low or dirty, replace the fluid.
- Examine suspension components like struts and bushings for wear; replace any worn parts.
- Ensure all bolts and fasteners are tightened to the manufacturer's specifications.