Skip the auto shop - Our mechanics make house calls

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?

A: Hello. The sound you are hearing is most li...

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 1000 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

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: Front turn signals are not working

The only reason I can think of for this to happen is if aftermarket bulbs were used and they were not the right ones. The car should only blink fast like that when the bulb has failed to let the...

Q: Headlights burning out

There are a few possible reasons for frequent headlight bulb burnout, but I would recommend looking very closely at your headlight assemblies. It is very possible that you may have a crack in your headlight, allowing moisture to get...

Q: Buying tiguan but there are issues

You need to find out why they need to replace the lower control arms. The may have bend bent from hitting a curb or another reason. I would suggest having the vehicle inspected by another mechanic, like one from YourMechanic....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...