2006 Corolla automatic transmission whine
Dan
I am the second owner and the records show it was maintained properly
and according to schedule.
The automatic transmission shifts smoothly, however it makes a rather
anoying whining noise, only at certain speeds and loads, and is more
pronounced after the car has warmed up.
Transmission fluid level is OK and the fluid color is dark red.
Did I buy a lemon? Is this anything to worry about?
Or is this a known issue with these models, maybe another sign of
slipping Toyota quality? Anything I can try besides replacing the
tranny fluid?
Bob Jones
"Dan" <drn...@hotmail.com> wrote in message
news:1ccd1c23-5199-4233...@40g2000vbr.googlegroups.com...
Wouldn't it still be under warranty? You might check with the dealer for any
kind of defects.
Dan
Not under waranty.
hls
> > tranny fluid?
Take it to a tranny expert and get an opinion. We have two Toyotas,
a 2007 and a 2008. Both trannies are dead quiet.
Ray O
Noise, vibration, and harshness are difficult to diagnose without
experiencing them first hand. Besides the transmission, other possible
sources of noises are the differential, wheel bearings, power steering
pumps, alternators, etc.
My recommendation is to take it to a Toyota dealer and go for a test ride
with dealer personnel to determine source of the sounds.
--
Ray O
(correct punctuation to reply)
Bob Jones
> Not under waranty.
You mean to tell me Toyotas have less then 4 years/30k miles warranty?
hls
"Bob Jones" <em...@me.not> wrote in message
news:4bfc6c63$0$10541$c3e...@news.astraweb.com...
Not mine.. I had a 7 year, 70,000 mile warranty.
Hachiroku ハチロク
Do you have this somewhere you can copy and paste quickly? ;)
Of course, I agree. Noises can be hard to ascertain even when you're
standing next to the car.
Hachiroku ハチロク
I have 7 years, 100,000 miles. But it has to be a "Certified Used" Toyota
to get that.
Or you pay extra for it when you buy the car new.
hls
"Hachiroku ハチロク" <Tru...@e86.GTS> wrote in message
news:I1%Kn.17722$TL5....@newsfe24.iad...
It was ceded to me when I bought the car new...Whether or not it is
standard,
I have no idea.
Hachiroku ハチロク
Not standard. The original owner either bought the car "Certified Used" or
bought the warranty as an 'option'. And different dealers have different
prices, and you can shop around and get the best deal up to ~180 days
after you buy the car.
And, it is transferrable to new owners until it expires.Not a bad deal,
and a good selling point.
Trouble is, the dealer I bought my Scion from wanted to add it on for
$1200. I found a dealer in CT with the same warranty for ~$800, but was
hesitant.
THEN I got the letter from Toyota saying, "Here's your *FREE* 7
year/100,000 mile warranty"!!!!!
It includes Roadside Assistance as well.
Ray O
"Hachiroku ????" <Tru...@e86.GTS> wrote in message
news:A0%Kn.50665$jt.4...@newsfe04.iad...
Before I became one of the people who went on test rides with customers if
they were not happy with the dealer's explanation or the dealer had trouble
identifying the sound, I was a customer relations analyst. As a CR analyst,
I used to have to give that line for all NVH issues so it became permanently
ingrained in my head, as did the toll-free number for Toyota's national CR
line. I just changed offices and don't have the phone number for my new
office memorized but I still remember the phone number from over 30 years
ago.
>
> Of course, I agree. Noises can be hard to ascertain even when you're
> standing next to the car.
>
Yup!
Dan
wrote:
I'm sure the noise (whine) is coming from the transmission.
It's definitely a gears type of noise.
I wanted to know if anyone had a similar experience and whether it
eventually caused the transmission to fail,
or can I just "live with it".
Hachiroku ハチロク
I have a whine coming from the trans on my '88 Supra. It stops when I put
the trans in gear.,
The car is 22 years old. Still OK.
john
then you know Toyota is going to give you the run around in order to
save warranty costs.
http://articles.latimes.com/2010/may/23/business/la-fi-lexus-20100523
Ray O
**********
A gear whine is not necessarily indicative of premature failure. Gear whine
is generally caused by a combination of gear-to-gear fit, loading, and gear
teeth cut and profile. Planetary gear sets in automatic transmissions are
generally very quiet, and I suspect that the source of the sound is not the
transmission. Since your car has a transaxle, the noise could also be
coming from the differential. Bad bearings sometimes make noises that sound
like gear noise.
Noises that occur only when the vehicle is moving is even harder to diagnose
without a chassis dyno and oscilloscope.
hls
"john" <john...@hotmail.com> wrote in message
news:87099afc-fafc-497b...@v12g2000prb.googlegroups.com...
I'm sure it's a defect. However, if you read the following article
then you know Toyota is going to give you the run around in order to
save warranty costs.
******
No, you are not sure it is a defect, John. You are the prophet of all doom
on the groups.
I have had one tranny, GM, that started to whine after it was rebuilt. My
Dodge started to whine as it aged, and it was due to a vibrating valve,
annoying but not a defect.
Reading some patents yesterday, I found specific language about whining
due to ATF foaming (the patent for fluorinated polyethers for ATF praised
their ability to defoam these formulations).
So unless you are a tranny expert, which I sincerely doubt, you are not
sure.
The OP needs to have a competent transmission mechanic look this over.
Or just live with it, and if it fails repair it.
Dan
- whine changes in pitch at gear shift and car speed.
- it's louder after car was driven for a while
- under certain conditions (load/speed) it disappears.
It's very likely a defect either due to unusual wear or manufacturing
loose tolerances, since such noise should not be present.
However, I hope it won't cause premature failure, and it's merely an
annoyance.
I'm wondering if a transmission specialist in this forum may point to
the cause of it.
Is it possible it's the torque converter? If yes, does it live on
borrowed time?
Ray O
What is the condition of the ATF?
Sounds that change in pitch and/or amplitude with changes in gear shift or
vehicle speed are not likely to be the transmission gear noise because if it
were, the sound would disappear as the planetary and sun gears are
stationary or rotating.
Torque converters generally do not make noise unless a bearing is bad and
since TC speed is determined by engine input speed, the sounds would be more
likely related to engine RPM than to the particular gear engaged.
A more likely cause of whine is the differential. Too much differential
pre-load can cause a whine, and too little can cause a clunk. Differential
whine often decreases or disappears when you back off the throttle and
coast. If that is the case with your car, the whine probably will not have
a negative effect on differential or transmission life. That said,
differential whine is usually repeatable under the same operating conditions
and doesn't come and go randomly.
A random noise could come from the valve body, and unless the ATF is
changing color rapidly, it is more of an annoyance than something that is
going to cause premature transmission failure.