why is my Toyota Corolla E170 (2013-2019) making a loud noise when I start it?

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

537 words

Problem Statement

Discover the causes of loud noise when starting your Toyota Corolla E170 (2013-2019) and follow our step-by-step guide to diagnose and fix the issue.

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 engine to cool before opening any components.

Symptoms

•Loud noise during engine start
•Possible knocking or rattling sound
•Noise may persist for a few moments after starting
•Potential decrease in engine performance
•Engine check light may illuminate (if issue is severe)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related fault codes.
2
Inspect the battery condition and connections for corrosion or loose terminals.
3
Check the oil level and condition to ensure it is within normal operating parameters.
4
Listen for the noise while inspecting the engine bay to identify the source (e.g., belts, pulleys).
5
Inspect the starter motor for wear or damage.
6
Check the timing belt/chain for slippage or wear if applicable.

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
•Oil drain pan
•Oil filter wrench
•Socket set
•Torque wrench
•Funnel
•Wrench set

Parts Required

•Engine oil (0W-20)
•Oil filter
•Starter motor (if needed)
•Timing belt/chain (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related fault codes.
2
Inspect the battery condition and connections for corrosion or loose terminals.
3
Check the oil level and condition to ensure it is within normal operating parameters.
4
Listen for the noise while inspecting the engine bay to identify the source (e.g., belts, pulleys).
5
Inspect the starter motor for wear or damage.
6
Check the timing belt/chain for slippage or wear if applicable.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to avoid electrical shock during repairs.
Allow the engine to cool before working on it.

2. Inspect and Replace Engine Oil

Sub-steps:
1. Remove the oil dipstick to check the oil level and condition.
2. If oil is dirty or low, drain the old oil using an oil pan.
3. Replace the oil filter with a new one.
4. Refill with the manufacturer's recommended engine oil (typically 0W-20 for this model).
Tools Required: Oil filter wrench, socket set, oil drain pan, funnel.

3. Inspect and Replace Starter Motor (if necessary)

Sub-steps:
1. Remove any covers or components obstructing access to the starter motor.
2. Disconnect the electrical connections from the starter motor.
3. Remove the mounting bolts and take out the starter motor.
4. Install the new starter motor and secure it with bolts.
5. Reconnect the electrical connections.
Tools Required: Socket set, wrench set.

4. Check and Replace Timing Belt/Chain (if necessary)

Sub-steps:
1. Remove the timing cover to access the timing belt/chain.
2. Inspect for wear, cracks, or signs of slippage.
3. If damaged, remove the old timing belt/chain and install a new one following the manufacturer's specifications.
4. Reassemble the timing cover and ensure everything is secured.
Tools Required: Torque wrench, socket set.