Skip the auto shop - Our mechanics make house calls

Q: Squealing sound even with serpentine belt off.

asked by on

Engine squealing even after I took off the belt.
My car has an automatic transmission.

Hi there. It sounds like the harmonic balancer may be creating the noise. There may be deterioration in the rubber layer that connects the inner and outer rings. The rubber layer is there to dampen the shock of accessories engaging. There may have been oil leaking onto the balancer or the rubber layer may simply be worn and in need of replacement. Replacing the balancer may require the use of an air wrench and requires proper torqueing to prevent damage to the both the crankshaft and the balancer. Perform a visual inspection to check for cracking, slipping of the rings, or exposed/squeezed out rubber. I suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Your Mechanic has several available technicians that can assist you with a car is making a noise inspection and harmonic balancer replacement.

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: I have a 07 suburban ltz with 150, miles the fuel pump isn't cycling and takes a long time to strt how I check fuel mod wire color

Hello, thank you for writing in. The fuel pump module is protected by a relay, so you are correct in wanting to check the power supply to the unit before replacing it. It should be a full 12 volts. The...

Q: Noise in front end when turning left

Any movable suspension component could account for the noise including the strut assembly, strut mount including bearing, ball joint(s), tie rod ends, sway bar links and sway bar frame mounts, control arm bushings and possibly loose brake components. If the...

Q: My Blower motor is not blowing even after I've replaced it and the resistor.

Occasionally, the blower motor itself will wear out or become faulty working intermittently as the brush contacts inside the motor wear out. The blower motor relay supplies power to this motor when you turn the switch to "on" that can...

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 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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...