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: I'm wondering where my neutral safety switch is

On most models, Toyota locates the neutral safety switch on the transmission itself, adjacent to the shifter cable. If you end up needing some help for the job, consider YourMechanic, as a certified technician can help you replace your...

Q: Jeep needs new head gasket.

If you have a head gasket blown you will sometimes see a white smoke coming from your exhaust. If you don't see white smoke you may see milky look gunk inside the oil fill or dipstick. I would have a...

Q: Truck makes loud noise when accelerating.

Hello. There are multiple things that may cause loud noises when stepping on the gas pedal such as axles, valve lifters, and catalytic convertors. I suggest you have a technician inspect the vehicle since there are several things that may...

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 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...
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...