Question about 2004 Toyota RAV4
Increasingly loud, high frequency whine (sounds like a hovercraft) when car is driving. No correlation to acceleration, speed or a/c use noted. Noise stops once brakes are applied. Brakes also screech in the morning, but only the first few brakes of the day.
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Posted on Jan 02, 2017
It sounds like your power steering fluid is low. When the fluid is low there will almost always be a constant growl coming from the pump. Worst case - it may be the pump itself going bad. . I own 3 Jeeps but have only had this problem on my 87 Cherokee.
Ford PS pumps are notorious for making noise as they get old, but they still seem to work ok. This may be the case with your Jeep. If the PS still works and the fluid level is normal, it may just be a matter of whether or not you can stand to listen to the noise.
Posted on Jan 04, 2009
More often than not the power steering fluid is low and that is the whine that you hear. Fill up your power steering fluid and see if it goes away. Cost about $5 bucks and will tell you if you need to spend more $$$ on something else.
Posted on Feb 13, 2009
I have the same problem like yours but what i did is to replace the alternator and now its so quite no more high pitched sound. You may used belt stress fluid but its only last for few seconds then sound comes again. I replaced it with refurbish part alternator.My sienna 2005.
Posted on Feb 04, 2009
I have a few suggestions for you,
First of all, check your air filter, make sure its clean, not clogged, and doesn't need to be changed.
I don't know how handy you are, but if you are fairly handy, check the idler pulley bearings, if your not, have a shop check it out, as a last resort.
Power steering pump/fluid being low is also a possibility, but thats usually more of a lower pitched whine then what you describe.
You say once the vehicle is warmed up, the whining stops. Does Weather seem to be a factor as well?
Hope I've helped, and don't forget to rate.
Posted on Feb 25, 2009
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