Skip the auto shop - Our mechanics make house calls

Q: My car squeals until I am at or above 40 miles and hr.

asked by on

The car squels until I am at or above 40 miles an hr. That includes when I have started the car.

My car has 140000 miles.
My car has an automatic transmission.

A: Hi there: What you’re describing sounds si...

Hi there:

What you’re describing sounds similar to the symptoms of a loose serpentine belt or water pump belt. As a belt wears out, it stretches and can create a harmonic "squealing" sound as it continues to spin around the pulleys. As the engine continues to accelerate, the belt can tighten which will reduce the sound. However, if it’s a loose belt, it is prone to heating up and breaking.

I think your best option here is to contact a local ASE certified mechanic, such as one from YourMechanic, who can test drive and diagnose the squealing noise onsite. This will give them a good starting point to eliminate some potential problems, saving you time and a lot of money on false diagnosis. Best of luck!

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: Check Engine Light blinking fast

You most likely have an engine misfire. The cause could be an ignition coil, spark plug, or plug boot problem, such as the valve cover leaking oil into the spark plug hole, shorting the coil out. I recommend that you...

Q: Car is making a squealing noise! Awful!

Hey there, thanks for writing in about your 2001 Ford Focus. I would suggest you start by adding some belt dressing to the belt, especially since it is new and this is the cheapest and easiest fix for starters. When...

Q: Air conditioner clutch doesn't engage

Hello there, a few different faults can cause the AC clutch not to engage on your 1998 Nissan 200SX. The most common would be the refrigerant is low, AC high pressure switch, AC clutch failure, or lack of voltage to...

Related articles

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...