I own a 4cyl ’06 Sonata. I’ve had the car for a year now, 8,000 miles
on the odometer. I love my Sonata!
But since my 2nd oil change at the dealership, about 4-5 months ago,
the car developped a Whining/wheezing sound that comes from the engine
compartment, in general from the RIGHT side, when hearing it from the
It sounds like an ELECTRICAL motor, kind of a WEEEEEEE sound, and the
sound is accurately parallel to the engine’s sound and its RPM,
fluctuating EXACTLY as the engine-sound is fluctuating with the tranny
shifting. It can be detected only when accelerating and especially at
low speed... It does it also when the car is in Neutral and the engine
revs to about 2,000-2,500.
Unlike many other cars with whining noise (did some Google search) --
I know my audio system (AM/FM radio or CD) is NOT affected by the
I heard all kinds of theories as to the origin of the sound, like the
Power Steering pump, Alternator, intake piping and manifold, even a
theory that it’s the Timing Chain.
Also, I noticed that when it’s drizzly and rainy here -- the sound is
significantly less pronounced....
My dealer keeps claiming it’s normal, or that there is no unusual
sound... Hyundai regional rep checked it and said all is normal...
Maybe it’s normal, but I KNOW the sound is not detected on other cars.
Anyone here has some experience or an intelligent theory? I would much
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