2000 Sonata drivetrain whine
Several months ago we purchased a nice, low-mileage (22,000) Sonata
GLS with 2.5 V6 and 4-speed automatic from a local Hyundai dealer. About two days after we purchased the car, the transmission failed right in the dealer's lot when we took it in for a minor service! They handled the problem without quibble, installing a new transmission and giving us a loaner during the service. (Fantastic warranty!) However, since the transmission has been replaced I've noticed a high-pitched whine that seems to be coming from the drivetrain when under load. It is most noticable at part throttle around 25 to 40 mph. I don't think it's an engine or belt noise as the pitch varies with road speed, not engine speed; higher road speed yields a higher-pitched whine. (Does not change when shifting gears.) Also when you let up off the gas there is a delay of a second or two before the whine goes away. Doesn't sound like tires as far as I can tell. I'm not very familiar with these cars mechanically, but on other vehicles I would suspect a touch of pinion or torque converter whine. When the car was brought back for an oil change I reported the noise to the service manager, who later said the tech couldn't reproduce it. (Admittedly it's not a very loud noise, but it is noticable and other Hyundais I've since driven in don't have it.) They asked that I take a drive with a technician to demo the noise, which I'll do at the next oil change. In the meantime I thought I'd ask here: anyone have an inkling of what could be causing this? Obviously if there is a serious problem developing I'd want it taken care of while the car is still under warranty! |
Re: 2000 Sonata drivetrain whine
Sounds like a little bit of gear whine from the differential in the
transmission. Different transmissions have different magnitudes of this noise. It doesn't sound from your description like there's any real problem. I'd be reluctant to put another transmission in, because based on your description, I think there's a reasonable likelihood the next trans could be worse. |
Re: 2000 Sonata drivetrain whine
To add: but do by all means drive with the dealer and let them make a
decision. If they think it's excessive, they'll be happy to fix it. |
Re: 2000 Sonata drivetrain whine
"hyundaitech" <howitsac@nospam.hotmail.com> wrote in message news:<959d7775b9918db1ea2276f528c49064@localhost.t alkaboutautos.com>...
> Sounds like a little bit of gear whine from the differential in the > transmission. Different transmissions have different magnitudes of this > ... Thanks, I'll take a ride with one of the dealer's techs to see what he thinks. What's the deal on these transmissions? This is our first Hyundai. Very nice car overall; comfortable, solid, lots of room, good pickup. We're thinking of keeping this car a year or two and depending on how things go possibly buying a new Sonata or Santa Fe. But while searching around for info I've run into stories about the automatic transmissions being problematical in these vehicles. (Certainly failing at 22,000 miles is not a good thing, but you can't really draw a general conclusion from one car.) If these trannies have had problems are they improved in the newer models? Any tips on extending their life? |
Re: 2000 Sonata drivetrain whine
Hyundai had a huge transmission issue once upon a time, but the last of
those transmissions was in the 1998 Sonata. Since then, Hyundai has been making constant improvements and I see no continuing transmission issues with their newer models. Have a look in the consumer reports reliability charts. Elantras (2001 & newer), Sonatas (1999 & newer), Tiburons (2003 & newer), and Santa Fes all use the same basic automatic transmission design, so they should be able to provide some interesting comparisons. |
Re: 2000 Sonata drivetrain whine
pdp11@techie.com wrote in message news:<86866269.0405011851.12785bbb@posting.google. com>...
> "hyundaitech" <howitsac@nospam.hotmail.com> wrote in message news:<959d7775b9918db1ea2276f528c49064@localhost.t alkaboutautos.com>... > > Sounds like a little bit of gear whine from the differential in the > > transmission. Different transmissions have different magnitudes of this > > ... > > Thanks, I'll take a ride with one of the dealer's techs to see what he > thinks. > > What's the deal on these transmissions? This is our first Hyundai. > Very nice car overall; comfortable, solid, lots of room, good pickup. > We're thinking of keeping this car a year or two and depending on how > things go possibly buying a new Sonata or Santa Fe. But while > searching around for info I've run into stories about the automatic > transmissions being problematical in these vehicles. (Certainly > failing at 22,000 miles is not a good thing, but you can't really draw > a general conclusion from one car.) If these trannies have had > problems are they improved in the newer models? Any tips on extending > their life? Well actually differential is not a part of transmission, but it probably doesn't matter to you. |
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