Skip the auto shop - Our mechanics make house calls

Q: Pulley came off engine

asked by on

The car won't start because the pulley that powers the water pump came off.

A: If you are talking about the pulley directl...

If you are talking about the pulley directly below the water pump, that is the crankshaft pulley, also called the harmonic balancer. The pulley for the belt bolts to the balancer. If the entire assembly came off that would cause the car not to start. The crankshaft position sensor reads the speed of that pulley to time the ignition and fuel delivery. I’ve never seen that happen before. It’s possible the crankshaft broke as well. A qualified mechanic, such as one from YourMechanic, would be happy to inspect your car’s no-start problem and provide an estimate or recommendation to get your car running again. If your car needs its harmonic balancer replaced, the mechanic will be able to complete this job for you as well.

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: Steering wheel is locked an key wont turn

It sounds like what you are describing is the steering lock mechanism actually doing it's job locking the steering wheel prior to turning the key. Any movement of the steering mechanism, whether at the wheel or the front tires when...

Q: Transmission

Many different components can cause a sound on startup. Engine accessories such as the belt, idler pulley, belt tensioner, and alternator are the most common causes of a noise on startup. Without more information, I see no reason to suspect...

Q: Car starts and then turns off

I would recommend starting with having your vehicle checked for trouble codes with an OBD2 scanner. Once the codes have been pulled by a knowledgable technician, a strategic diagnosis plan can be made. The Check Engine Light code will aid...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...