FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
my Volkswagen Tiguan has a strange smell when I accelerate what should I check - Volkswagen Tiguan
Home/Cars/Volkswagen/Tiguan/Second Generation (2018-present)/my Volkswagen Tiguan has a strange smell when I accelerate what should I check

my Volkswagen Tiguan has a strange smell when I accelerate what should I check

Volkswagen Tiguan Second Generation (2018-present)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
437 words

Problem Statement

Learn how to diagnose and fix strange smells when accelerating in Volkswagen Tiguan. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Exhaust System
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 or replacing engine components.

Symptoms

  • •Strange odor when accelerating
  • •Possible decrease in engine performance
  • •Check engine light illuminated
  • •Reduced fuel efficiency
  • •Excessive exhaust smoke

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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
  • •Screwdriver set
  • •Socket set
  • •Flashlight
  • •Smoke testing kit

Parts Required

  • •Air filter
  • •Catalytic converter
  • •Fuel injectors

Additional Information

Affected Component
Exhaust System
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
5 items
Parts Required
3 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Solution
1. Preparation
  • Gather tools and parts needed for the repair.
  • Ensure the vehicle is parked on a flat surface and the engine is cool.
2. Inspect and Repair Engine Components
  1. Visual Inspection:
    • Use a flashlight to inspect the engine bay for leaks or damaged hoses.
    • Check for any signs of burnt oil or coolant.
  2. Replace Air Filter:
    • Remove the air filter cover using a screw driver.
    • Replace the old air filter with a new one, ensuring it fits tightly.
    • Reattach the air filter cover securely.
3. Examine Exhaust System
  1. Check for Leaks:
    • Start the engine and listen for any hissing sounds from the exhaust.
    • Use a soapy water solution to identify leaks by applying it to exhaust joints; bubbles will form at the leak.
  2. Inspect Catalytic Converter:
    • Examine the catalytic converter for any physical damages or overheating signs.
    • If damaged, replace with a new catalytic converter according to manufacturer specifications.
4. Repair or Replace Fuel Injectors
  1. Fuel Injector Inspection:
    • Remove the fuel rail to access the injectors.
    • Inspect for clogs or leaks around the injector seals.
  2. Cleaning/Replacement:
    • Clean the injectors using a specialized cleaner or replace them if necessary.
    • Reattach the fuel rail and ensure all connections are secure.
5. Final Checks
  • Start the engine and monitor for any unusual smells or performance issues.
  • Ensure that the check engine light is off after repairs.

Tools Required:

  • OBD-II scanner
  • Screwdriver set
  • Socket set
  • Flashlight
  • Smoke testing kit (if needed)

Parts Required:

  • Air filter
  • Catalytic converter (if needed)
  • Fuel injectors (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

  • Disconnect the battery before working on electrical systems.
  • Allow the engine to cool before inspecting or replacing engine components.