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

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

495 words

Problem Statement

Discover the causes and solutions for knocking noise during acceleration in the 2013-2019 Toyota Corolla E170. Step-by-step diagnostic and repair guide.

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 inspecting engine components.

Symptoms

•Knocking noise when accelerating
•Increased engine vibrations
•Unusual sounds during gear shifts
•Loss of power during acceleration
•Possible check engine light illumination

Diagnostic Steps

1
Inspect the engine bay for loose components or debris that could cause noise.
2
Use an OBD-II scanner to check for any stored trouble codes.
3
Conduct a visual inspection of the engine mounts for wear or damage.
4
Check the transmission fluid level and condition.
5
Test drive the vehicle to replicate the knocking noise while observing RPM and load changes.
6
Inspect the suspension components for wear, especially the control arms and bushings.

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
•OBD-II scanner
•Jack and jack stands
•Torque wrench
•Pry bar

Parts Required

•Engine mounts (if damaged)
•Transmission fluid (if low or contaminated)
•Suspension components (if worn)

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Diagnostic Steps

1
Inspect the engine bay for loose components or debris that could cause noise.
2
Use an OBD-II scanner to check for any stored trouble codes.
3
Conduct a visual inspection of the engine mounts for wear or damage.
4
Check the transmission fluid level and condition.
5
Test drive the vehicle to replicate the knocking noise while observing RPM and load changes.
6
Inspect the suspension components for wear, especially the control arms and bushings.

Solution

1. Preparation

Tools Required: Socket set, OBD-II scanner, jack and jack stands, torque wrench.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery for safety.

2. Inspect Engine Mounts

Sub-steps:
1. Raise the vehicle using a jack and secure it with jack stands.
2. Locate the engine mounts and visually inspect them for cracks or excessive wear.
3. Use a pry bar to check for movement in the mounts; they should not allow excessive movement.
4. If damaged, remove the bolts securing the mounts and replace with new mounts.

3. Transmission Fluid Check

Sub-steps:
1. Locate the transmission dipstick (if applicable) or check the fill plug.
2. Remove the dipstick and check the fluid level; add fluid if low.
3. Inspect the fluid for burnt smell or metal particles; if contaminated, consider a fluid change.
4. To change the fluid, drain the old fluid and replace it with the manufacturer-recommended fluid, ensuring to use the correct amount.

4. Suspension Inspection and Repair

Sub-steps:
1. Inspect suspension components like control arms, bushings, and struts for damage or wear.
2. Replace any worn components; use a socket set to remove bolts and install new parts, torquing to manufacturer specifications.
3. Reassemble all components and ensure proper alignment.