Q: Is it normal for the crankshaft pulley to be stuck if the car is off. The serpentine belt is removed.

asked by on

Recently my serpentine belt slipped off while driving. The car is parked and it is cold. I have removed the belt and inspected all of pulleys. I noticed that the pulley for the water pump seems to be a little bit rough, which I will replace. In addition, the camshaft pulley does not move. Would this be normal if the car is off? Or does this indicate another issue with the camshaft?

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

The only pulleys you should be able to turn by hand when the serpentine belt is not in place are: the water pump, alternator, and power steering pump pulleys. The air conditioning compressor has a clutch on it that should spin freely as well but it will not be rotating the internals of the compressor.

The compressor internals are only spinning when you turn the A/C on. The A/C clutch is electro-magnetic. When it’s energized by turning the A/C on, it will "connect" to the compressor internals and spin them to give you cold air.

The camshaft and crankshaft pulleys are directly attached to the engine (camshaft and crankshaft) and will only rotate if the engine is running or manually rotating the engine by placing a socket and breaker bar to the crankshaft pulley bolt. That you cannot rotate either cam or crankshaft pulleys by hand is completely normal. If you were able to rotate them bare handed, THEN you would have a problem.

If you’d like to have your water pump pulley replaced, consider YourMechanic, as a certified technician can come to your home or office to service the car. They can also ensure your other pulleys are working as intended as well. Good luck

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Is it normal for the crankshaft pulley to be stuck if the car is off. The serpentine belt is removed.

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: Running lights and tail lights stay on when the engine is off and the key removed

Hello. It sounds like your time delay in the control module is not working. It may also be a short in the switch but that is not as likely. The retained power relay may be failing or the control module...

Q: Lower control arm snapped at axel can i drive if i go slow

Hi Tiffany. I would strongly recommend against driving with any damage to the front suspension. Even driving slowly can create a rather serious safety issue. It's always best in these cases to defer to caution and have the vehicle towed....

Q: Q: Serpentine belt came off

A thrown belt is generally caused by either a seized peripheral - such as an alternator - AC compressor, or possibly a faulty tensioner or idler pulley. It is often suggested that if a belt has been thrown, that the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...