Q: My car makes a hissing sound when i accelerate.

asked by on August 26, 2017

As i rev up to 3,000 revs, the engine starts making a hissing sound. When it goes into the next gear it stops. I always hear it right before the next gear change.

My car has 150000 miles.
My car has an automatic transmission.

Hi Jesus. What you are describing sounds like you have a vacuum leak present with your Altima. When a vacuum leak is present in an engine, this causes an excessive imbalance in the air/fuel ratio which creates a loss of power and causes the motor to run at a much higher RPM as a result of the increased oxygen present in the fuel charge being injected into the motor. You might want to have one of our mobile mechanics come to your location to diagnose your noise issue, so that the right repairs can be made.

Was this answer helpful?
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

My car won’t shift to the park gear. All other gears work

There are a number of different things that may cause the vehicle to not go into park such as a broken or damaged shift cable or mechanism, a faulty key tumbler in some cases, or a faulty transmission solenoid. I...

"Service Engine Soon" light came on today. Do you know what this means? and how soon should I get it checked? 2004 Nissan Sentra

I am working on this

How do I clean the interior?

Keeping the interior of your car clean is important, but it’s not hard to do. The most important thing is to stay on top of it, as dirt, dust, and debris can build up in a surprisingly short amount of...

Related articles

A Buyer’s Guide to the 2012 Nissan Xterra
The The 2012 Nissan Xterra is designed for those who want a true sport utility that can still handle off-road driving with ease. Built on the same F-Alpha platform seen in the Titan and Frontier trucks, the Xterra also sports...
The Best Used Cars to Buy If You’re a Vet
The The best car for a vet to own largely depends on the type of practice he or she has. Large animal vets are probably going to want something that delivers a fair bit of power, and possibly even towing...
How to Get Nissan Dealership Certified
Nissan dealerships offer auto technician jobs to those certified through Nissan’s Service Career Opportunities for Professional Enhancement program.