Skip the auto shop - Our mechanics make house calls

Q: Intake plenum

asked by on

On the underside of my cars upper intake plenum there is a small metal pipe in the center of it for a vacuum hose where is this hose supposed to connect to? There's nothing that I can see that's disconnected with the plenum removed. The car starts and runs fine even though this piece is missing.

My car has 3000 miles.
My car has an automatic transmission.

If the engine runs perfectly fine, this is likely not a spot for a vacuum hose. If a vacuum hose went there, the engine would run very poorly due to the major vacuum leak.

I know that the 3.1L V6 engine was used in multiple other vehicles. It is possible that this part of the engine is used in a different vehicle for something such as a mounting spot for something else that your vehicle does not have.

As long as the vehicle runs well, I would disregard this issue.

However, if any problems come up, feel free to contact one of our mobile technicians who can come to your home or office to service your vehicle.

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

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!

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: Low rpms can't reverse

Hello there. Thanks for writing in about your 2014 Nissan Versa Note. Many different faults could cause the vehicle to lack power. The most common would be a fuel pump, fuel filter, misfire condition, spark plugs, coil, battery, alternator, or...

Q: Turn Signals/Hazards Not Working 2005 Pontiac Grand Am

Hello - the problem you are experiencing is a failure of the turn signal/hazard warning flasher unit. The flasher unit performs the flash function for both your turn signals, and the emergency hazard flasher function. I recommend a turn signal/hazard...

Q: Engine vacuum pump and centrifuge is leaking.

Hi there. All parts on a car are designed to have a longevity date to them, but it is normal for parts that are more than 5 years old to fail. The vacuum pump and centrifuge could be leaking for...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...