Q: noise when car is running, sounds like wu, wu ,wu

asked by on

when the fan is off , there is no noise, turn on fan, the engine makes a wu wu wu, sound . now turn off the engine and leave the fan on, the sound is gone fan runs normal Run the engine with no fan the engine sounds normal

My car has 134000 miles.
My car has an automatic transmission.

Hello. Thanks for writing in. There a few things we need to clarify before we can begin delving into the issue. First, are we referring to you cooling system and engine fan, or the blower motor fan which is used for the cabin climate control? If this is the climate control fan we are talking about, then we need to know more about the conditions in which it is being run. Does this happen with the heater and the A/C, or with one or the other? Does this happen on all fan speeds? With this kind of information, we can determine what component may be to blame. Without some of these details, its nearly impossible to tell what the cause of the noise is.

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. noise when car is running, sounds like wu, wu ,wu

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: Car shuts off, the engine runs in park

Hi! You may be experiencing an issue caused by the idle air control, the fuel injector, or EGR valve. If the engine runs fine while driving down the road, but won't idle, then thats different than it running bad all...

Q: Truck makes whining noises

You are correct to suspect the differential. Other parts of the undercarriage, such as the tires and wheel bearings, usually result in a noise that persists during both acceleration and deceleration. Whining and howling noises are usually related to the...

Q: one motor mount on my 98 intrigue was installed upside down, is this ok

Hello. If the engine mount was put on upside down then it should be replaced. Most of these mounts will only be installed one way, but if he got it in upside down then it should be replaced as these...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...