Skip the auto shop - Our mechanics make house calls

Q: High-pitched whistle from under the hood

asked by on

After driving about a mile, the jeep is making a high-pitched whistle from under the hood. It makes the noise when my foot is off the gas pedal. If I am on the gas, even slightly, there is no noise at all. If I sit and idle in park for about 5 minutes, the sound slowly goes away.

A: A few things come to mind when you describe...

A few things come to mind when you describe this noise. Do you have a manual or automatic transmission? If you have a manual you could be describing a throw out bearing in your clutch. If you are experiencing any performance issues, it could be a restricted catalyst converter. On your model, I have even seen the PCV valve cause a noise like this. My best suggestion would be to have a mechanic, such as one from YourMechanic, come and inspect the whistle noise that is coming from your hood.

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・Save up to 30%

Get a quote

What others are asking

Q: No dash lights or gauges

Hello. The existence of so many non-functioning items would seem to indicate that a main control fuse, and junction box, are not working. Check to see if there are any electrical components that may have been disturbed during the timing...

Q: Possible electrical problem

It is always an unfortunate experience to have your vehicle stall while you are driving. It is also unfortunate that there can be a great number of reasons as to why your Jeep Grand Cherokee is stalling as well. Without...

Q: Squeeking noise, driver's side lower than passenger's

A worn suspension or steering linkage can start to make noise once the lubrication has been washed away or a worn rubber bushing starts to fail. Have an experienced technician, like one from YourMechanic, raise the vehicle and inspect the...

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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.