why does my Toyota Corolla E170 (2013-2019) have a burning smell during acceleration

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

526 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix burning smell during acceleration in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms and solutions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool before opening the hood to prevent burns.
•Disconnect the battery before working on electrical components.

Symptoms

•Burning smell noticeable when accelerating
•Possible smoke coming from the engine bay
•Reduced engine performance or power
•Unusual noises from the engine or transmission
•Overheating engine temperature gauge (if applicable)

Diagnostic Steps

1
Inspect the engine bay for any visible signs of fluid leaks, particularly oil or coolant.
2
Check the engine oil level and condition; look for signs of burning or contamination.
3
Examine the transmission fluid level and condition; ensure it is at the proper level and not burnt.
4
Scan the vehicle for any error codes using an OBD-II scanner to identify potential issues.
5
Inspect the exhaust system for any signs of burning oil or fluid leaks that could be causing the smell.
6
Look for worn or damaged belts and hoses that could be making contact with hot surfaces.

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
•Socket set
•Torque wrench
•Screwdrivers

Parts Required

•Engine oil
•Oil filter
•Transmission fluid (if applicable)
•Replacement gaskets or seals (if leaks found)
•Belts or hoses (if damaged)

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Diagnostic Steps

1
Inspect the engine bay for any visible signs of fluid leaks, particularly oil or coolant.
2
Check the engine oil level and condition; look for signs of burning or contamination.
3
Examine the transmission fluid level and condition; ensure it is at the proper level and not burnt.
4
Scan the vehicle for any error codes using an OBD-II scanner to identify potential issues.
5
Inspect the exhaust system for any signs of burning oil or fluid leaks that could be causing the smell.
6
Look for worn or damaged belts and hoses that could be making contact with hot surfaces.

Solution

1. Preparation

Gather tools and parts needed for inspection and repair.
Disconnect the battery to prevent electrical shorts during inspection.

2. Inspect and Repair Leaks

Sub-steps:
1. Remove the engine cover if applicable.
2. Use a flashlight to look for oil or coolant leaks around the engine and transmission.
3. Clean any visible leaks with a degreaser and cloth to identify the source of the leak.
4. Replace any damaged gaskets, seals, or hoses found during inspection.

3. Change Engine Oil and Filter

Sub-steps:
1. Drain the old engine oil using an oil drain pan and remove the oil filter.
2. Replace with new engine oil; refer to the owner’s manual for the correct oil type and capacity.
3. Install a new oil filter, making sure to lubricate the rubber gasket with new oil before installation.
4. Start the engine and let it run for a few minutes, check for leaks around the oil filter and drain plug.

4. Change Transmission Fluid (if necessary)

Sub-steps:
1. Refer to the owner’s manual for the correct transmission fluid type.
2. Drain the old transmission fluid and replace the filter if applicable.
3. Refill with new transmission fluid to the correct level.
4. Start the engine and cycle through the gears to ensure proper fluid circulation.

5. Inspect and Replace Worn Components

Sub-steps:
1. Inspect belts, hoses, and wiring for signs of wear or damage.
2. Replace any worn belts or hoses that may come in contact with hot surfaces.
3. Tighten or replace any loose components that could be causing unusual noises.

Tools Required:

OBD-II scanner
Oil drain pan
Socket set
Torque wrench
Screwdrivers
Replacement oil filter and engine oil
Replacement transmission fluid (if applicable)

Parts Required:

Engine oil
Oil filter
Transmission fluid (if applicable)
Replacement gaskets or seals (if leaks found)
Belts or hoses (if damaged)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Allow the engine to cool before opening the hood to prevent burns.
Disconnect the battery before working on electrical components.