☰
GET A QUOTE

Q: My crankshaft pulley looks like it broke/fell off as I got on the highway.

asked by on October 10, 2017

My crank shaft pulley was misaligned and I had it fixed about 1 1/2 years ago. A few days ago I noticed a squeak so I removed the serpentine belt to inspect it and the pulleys. Everything appeared fine. Replaced the serpentine belt, since it was still under warranty, and the squeak stopped. My car lasted 2 days before I heard a loud snap as I was getting on the highway and lost ac/power steering. I looked under the hood and my belt is still intact and on, but it looks like the ribbed part of the crank shaft pulley broke off/fell off so the belt doesn't spin.

My car has 135000 miles.
My car has an automatic transmission.

Recommended Services

Crankshaft Harmonic Balancer Replacement $174.15 - $965.93 Get a Quote
Or For Any Other Auto Repairs Get a Quote

The fancy name for the crankshaft pulley is the Harmonic Balancer. It is made in three pieces, the hub is attached to the outer ring via a thin band of rubber that is held in with adhesive. when is fails, first the ring starts to slip (your squeaking sound) then it will separate entirely. The good news is you can have the Balancer replaced at your convenience by contacting YourMechanic. They will send a technician to your home or office to replace your Harmonic Balancer right there on the spot

Ford
Mustang
2007
V6-4.0L
crankshaft harmonic balancer
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I use the Uconnect cancel command?
If you make a mistake while using Uconnect, or change your mind about what you want to be doing, you can use the cancel command. Just press the Uconnect phone button (which is placed on either the steering wheel, or...
Read more
How do I adjust the brightness of the lighting on the instrument panel?
You may want to adjust the lighting on the instrument panel to make it less bright or to increase the brightness, depending on your personal preference. Locate the button for adjusting the brightness of the panel lighting, which is located...
Read more
Truck shakes, sputters, and loses power when accelerating.
Hello, I would enlist the help of a mechanic to inspect the engine (https://www.yourmechanic.com/services/engine-hesitates-during-acceleration-inspection) because this problem could be a number of things. I would do a tune up on it's spark plugs, air filter, fuel filter and then go...
Read more
Car won't start after flooring accelerator while going 75 MPH.
Your Dodge Stratus sounds as if it may be experiencing a serious problem. The initial symptom of the RPMs jumping from maximum to 2000 RPMS, appears to reveal that your transmission has slipped out of gear. The maxing out of...
Read more
Police interceptor makes grinding sounds
The noise is coming from the internal transmission bearing or overriding clutches. Not all of these parts may have been replaced when the transmission was overhauled. I can only recommend having a qualified transmission mechanic come and listen to the...
Read more
Trickling water noise under hood
The sound you're hearing may be caused by an exhaust leak (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-an-exhaust-leak). A small exhaust leak close to the engine makes a sound similar to what you're describing. It will normally only occur during acceleration. You may be able to...
Read more
I smell oil burn smell in car. This started after my last oil change. What could it be?
Depending on how long ago your last oil change was, this may be the result of an oil leak or potentially oil that has dripped on the motor somewhere that has been heated up. This happens occasionally when changing oil...
Read more
My car radio will not turn off when I open my driver door.
Hello. You need to start by checking to see if the dome light comes on when the door is open. If it does not then the door switch may be the issue. If it does then you more than likely...
Read more
New battery won't hold a charge. 2000 Ford Ranger
Hi there - this behavior sounds more like there is a parasitic load, or drain, on the battery after shutting it off. This problem can be diagnosed by connecting an ammeter to the positive (red) battery cable, observe the current...
Read more

Related articles

The Best Used Cars to Buy If You Have 3 or More Kids
If If you have three or more kids, you could probably get by with a mid-size sedan if all you want to do is take them from Point A to Point B. Realistically, though, having kids means music lessons, athletics,...
Read more
The Top 5 Selling Cars in Connecticut in 2012
Connecticut Connecticut offers plenty of rain and its fair share of snow during the winter months, which means drivers need vehicles that can handle these conditions. Top selling vehicles in previous years have included the Toyota Camry, Corolla and the...
Read more
How to Buy a Classic Ford Vehicle
When it comes to American-made vintage vehicles, few brands are more collected than Fords. Indeed, many Ford models do embody the adage “things get better with age” – at least in terms of value. In most cases, once a Ford...
Read more

Browse other content

Estimates
Cities
Maintenance
Cars