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

asked by on

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
  1. Home
  2. Questions
  3. My car makes a hissing sound when i accelerate.

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: Car Accelerates Slowly Unless I Push Aggressively on Gas

Hi there. The dealership is probably correct in this case. A dirty air filter can cause acceleration problems. However, it is also possible the fuel filter as well is dirty and will need to be changed as well. Typically it...

Q: The interior lights won't turn on and the shift lock is stuck.

Check the fuses on the inside the panel in the cab. Look for any blown fuses and replace the fuses with new ones. If the fuses are good, then there could be an electrical issue within the cab. Look for...

Q: What could happen if AdvanceTrac isn't serviced

Advancetrac is just your traction control system and is not necessarily a safety issue. This is an optional feature for driving a car. Although many vehicles come with this feature standard it is not necessary for normal driving. If you...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...