Skip the auto shop - Our mechanics make house calls

Q: Hydraulic Fan

asked by on

Hey i have a jeep grand cherokee 2005 limited 5.7l and it has a hydraulic fan. The fan works fine and i recently just put a new power steering pump in and now is the fan that is over accelerated and noisy. Do u guys now what i should do or how do i fix it?

My car has 51000 miles.
My car has an automatic transmission.

If the fan goes to 100 percent but does not reduce speed then the fan control module assembly needs to be replaced as an assembly as no parts are serviceable. A bad power steering pump may pass debris into the fan module valves and cause them to stick. The fan valve is not serviceable and the fan assembly needs to be replaced as an assembly. If you want this looked at first, a certified technician from YourMechanic can inspect your A/C system in order to make the correct repair.

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!
  1. Home
  2. Questions
  3. Hydraulic Fan

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: power steering fluid is spilling between cap and reservoir. Is my pump bad?

Hello, thank you for writing in. The vehicle is likely having issues with the power steering pump. The best way to decide without a doubt is to catch it in the act. You can do this by cleaning off the...

Q: Loss of power and turbo smoking.

It sounds as if your turbo not only has a gasket leaking but that it has also got oil inside of it. Since the turbo is connected to the exhaust it becomes very hot. When oil manages to get inside...

Q: AC and heat not working

Hi. Does the fan make any noise when you turn either on? If the fan comes on but no air comes out, something is wrong with the blower door that controls which direction the warm or cold air flows. It...

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...
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...
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...