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gsee Posted on Oct 26, 2017

Positive pressure in cab causes rumble noise

When the fan is on (can be a/c or not), there is a deafening rumble, not unlike the sound wind buffeting makes when only the rear windows are rolled down in a car. All the windows are up, however, and the only thing that relieves it is to have the fan only on the lowest settings (1 or 2 out of 4) or to crack another window in the vehicle.

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David

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  • Posted on Oct 27, 2017
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Could be the bearings in the fan motor wearing out and you need to replace the motor.

3 Related Answers

Nicholas Csorba Jr.

  • 148 Answers
  • Posted on Jun 20, 2009

SOURCE: Wind Buffeting on 2010 Toyota Camry

that is just the way the car is built, the newer cars with the aerodynamics set the way they are will have a buffering sound if only front or only rear windows are open, like you said the only way to negate that noise is to open the front windows a crack, its a characteristic of the vehicle, many new cars do that.

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Anonymous

  • 1986 Answers
  • Posted on Oct 07, 2009

SOURCE: Passenger window makes loud noise when rolled down

On the inside trim, you can remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you'll need to manipulate the panel and disconnect the door handle linkage from the door handle and disconnect the wiring for your controls. Pull back the weather seal and you should be able to see what the window is catching on.
I've seen cases where the lock cylinder comes loose and hits the window

Anonymous

  • 216 Answers
  • Posted on Apr 07, 2010

SOURCE: About 3 months ago I began experiencing problems

your cars system is powered and controled by an ECU ( electronic control unit or computer box) the program is malfunctioning by then, have ur car checked using a scan tool with parameters designed for your cars ECU to check the sensors it might only needs reprogramming rather than buying a very expensive computer box.

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I own a 2007 Forester manual box 70k it has developed a rumble on the back axle under pressure ie uphill in 2nd or 3rd gear as if going over rumble strip lasts for approx. 5 - 10 seconds. Thanks Joyce

Start with the simple stuff: is the exhaust system fully supported?
Harder stuff: check for ...
* loose rear suspension components (unlikely)
* prop shaft U-joint wear (also unlikely)
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I have a 2007 Isuzu that makes a rumbling sound between 60 and 80 kph the wheel bearings have been replaced 3 times in 8 months but the noise is still there

If your car is running fine and only making a noise when you are traveling at high speed it may be wind related. Check inside your front wheel wells behind the tires... There should be a rubber sheet between there and the engine compartment. It's designed to protect components on your engine from rain water & road debris etc. Make sure it's hanging down straight and not caught up on anything or torn. If that's not it, look around in your engine compartment and undercarriage for anything loose that would flap around in the wind (i.e. a mechanic's rag, tool or something got stuck you ran over). If you don't see anything out of the norm you can try a blower directed at your car to mimic wind conditions at 60 mph. The noise may present itself to a degree. It might be a long shot but worth a try. Good luck with you mystery noise. Let us know how it turns out.
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I have have high pitch wind noise from fan clutch after replacement is it normal on new fan clutch

Fan clutches are stiff and loud till vehicle runs a bit, as fan clutch mechanism warms up drag on clutch mechanism releases pressure and will free wheel.
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What might be experienced by transaxil/transmission bearings wear? Rumbling or vibrations?

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Wind noise on a mini cooper

I would suggest a good wind deflector like the Zefferus windscreen or something to get rid of the bogeys of wind noise and buffeting.
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Terrible wind buffeting noise with rear windows-both Buick and dealership insist we pay for the fix as described in #PIT4355B as "helicopter type" noise. Unbelievable. Sounds like tire is falling off the...

Here's the info from GM:

Condition/Concern:
Some customers may comment of a helicopter type noise when a rear window is lowered. This is known as buffeting and it is a low frequency, high volume wind noise that may occur in a moving vehicle with a rear window open.

Recommendation/Instructions:
This is a normal characteristic of this vehicle, but the concern can be minimized by lowering a front door glass approximately 1 to 2 inches. Installation of accessory weather deflectors along the front door glass may also be effective in alleviating the buffeting noise. Seems to me there's nothing to pay for with this info. This is common in alot of vehicles I've dealt with in my career. I'd say if the dealer wanted you to pay for them to tell you that, maybe you should find help somewhere else.
The Enclave is a really nice vehicle. Don't let poor customer service from a dealer discourage you from enjoying your car.
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Wind Buffeting on 2010 Toyota Camry

that is just the way the car is built, the newer cars with the aerodynamics set the way they are will have a buffering sound if only front or only rear windows are open, like you said the only way to negate that noise is to open the front windows a crack, its a characteristic of the vehicle, many new cars do that.
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Is it normal for your car to shake when you have a window open?

Ceck your rear diff propshaft centre bearing and rear diff mountings.These are common causes for vehicle vibration on these models.
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