Q: hissing sound when accelerating - 2014 Volkswagen Tiguan

asked by on

I recently bought a Tiguan with 9000 miles on it. Whenever I accelerate it makes a hissing sound. It's not like a turbo whistle, since it is turbo 4 cylinder. It sounds like 'ssss' for half a second like it's letting off steam in the air, kind of like a truck sounds. Does this sound serious? Should I take it to the repair garage?

Hello. The sound you are hearing is most likely a vacuum or intake manifold leak. The vacuum created by the engine is crucial for proper intake of fuel and air, as well as the combustion inside of the chamber. Now the intake manifold for that air coming in and being mixed with the fuel can also make a sound if there is a leak. The vacuum is sucking in the air and any hole or gap will likely make noise during that process. You will want to get this looked at. Depending on the severity of the leak, you will most likely see an increase of power. To have this diagnosed, a certified professional, like one from YourMechanic, can come to your car’s location to inspect the sound and let you know what needs to be repaired.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. hissing sound when accelerating - 2014 Volkswagen Tiguan

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do I use the turn signals?

Turn signals are an important safety feature that alerts surrounding drivers when you are planning to turn. To signal a right turn, pull the turn signal lever (located on the left side of the steering column) up to the second...

Q: ABS warning lights

It seems as if your vehicle may be having problems with the voltage in the electrical system. Have the battery terminals inspected for cleanliness and integrity, and then test the battery and charging systems. A failing alternator assembly, can cause...

Q: Oil and suspension

Hi there. From the description you have provided, I am concerned about the diagnosis you have received, being your vehicle has only 52,000 miles. Another inspection is recommended. With oil leaks, sometimes, steam cleaning the engine first would help identify...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...