why does my Honda CR-V Fifth Generation (2017-2022) have a burning smell when accelerating

Honda CR-V Fifth Generation (2017-2022)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

622 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 to diagnose and fix the burning smell during acceleration in Honda CR-V (2017-2022). Step-by-step guide with symptoms, diagnostics, and repairs.

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 opening the hood to prevent burns.

Symptoms

•Burning smell, particularly noticeable during acceleration
•Possible decrease in engine power
•Smoke visible from under the hood or near the wheels
•Unusual noises from the engine or transmission
•Dashboard warning lights may illuminate (e.g., oil pressure light)
•Fluid leaks under the vehicle

Diagnostic Steps

1
Inspect the engine bay for any visible signs of oil or fluid leaks.
2
Check the engine oil level and condition using the dipstick.
3
Scan the vehicle's onboard diagnostic system for error codes using an OBD-II scanner.
4
Inspect the transmission fluid level and condition.
5
Examine the exhaust system for any obstructions or damage.
6
Check for any worn components in the drivetrain, such as belts or hoses.

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
•Fluid pump
•Torque wrench
•Oil filter wrench

Parts Required

•Engine oil (0W-20 or as specified)
•Transmission fluid (ATF DW-1 or as specified)
•Oil filter (if oil change is performed)
•Replacement belts or hoses (if worn)

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Symptoms

•Burning smell, particularly noticeable during acceleration

•Possible decrease in engine power

•Smoke visible from under the hood or near the wheels

•Unusual noises from the engine or transmission

•Dashboard warning lights may illuminate (e.g., oil pressure light)

•Fluid leaks under the vehicle

Diagnostic Steps

1
Inspect the engine bay for any visible signs of oil or fluid leaks.
2
Check the engine oil level and condition using the dipstick.
3
Scan the vehicle's onboard diagnostic system for error codes using an OBD-II scanner.
4
Inspect the transmission fluid level and condition.
5
Examine the exhaust system for any obstructions or damage.
6
Check for any worn components in the drivetrain, such as belts or hoses.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a flat surface and the engine is cool.
Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Engine Oil

Sub-steps:
- Remove the engine oil dipstick and check the oil level; top off if necessary.
- Inspect the oil for a burnt smell or dark color, indicating contamination.
- If the oil is contaminated, drain the old oil using a socket set to remove the oil pan bolt.
- Replace with new oil according to manufacturer specifications (typically 0W-20 or similar).
- Reinstall the oil pan bolt and torque to the manufacturer's specification (usually around 20 lb-ft).

3. Check and Replace Transmission Fluid

Sub-steps:
- Access the transmission dipstick and check fluid level and condition.
- If fluid is low or burnt, drain the fluid using a fluid pump.
- Replace with new transmission fluid as per Honda specifications (typically ATF DW-1).
- Reinstall the dipstick and ensure it is secured properly.

4. Inspect and Replace Worn Components

Sub-steps:
- Inspect all belts and hoses for wear, cracks, or leaks.
- Replace any damaged components with OEM parts, ensuring they are properly tensioned.
- Check the exhaust system for leaks and secure any loose connections.

5. Reconnect Battery and Test Drive

Reconnect the battery terminals.
Start the engine and let it idle for a few minutes while checking for any unusual smells or leaks.
Conduct a test drive to ensure the burning smell is eliminated and the vehicle accelerates smoothly.