Yaris 2007

#11

<rm (AT) biteme (DOT) org> wrote

Quote:

Octavio <octo22 (AT) yahoo (DOT) com> wrote:
"Ray O" <rokigawaATtristarassociatesDOTcom> wrote in message
"Octavio" <octo22 (AT) yahoo (DOT) com> wrote in message

Just wondering one weird thing about the 4-gear automatic
transmission in this car.

When engine and transmission are cold and after I started the engine
and
start driving, the transmission stay lock in second gear (not the
third,
the second gear...) for one or two hundred feet then finally goes in
third for a while as it warms up then the overdrive gear can kick in.
I do know many automatic transmission stay locked in third gear until
they warm up but... the second gear is new for me.

Is it normal?

That is normal operation of the automatic transmission. If you
were to immediately drive at higher speed, the transmission would
upshift from 2nd to 3rd.

Nope, it won't! It *stays* in 2nd for a few hundred feet. I can
rev the engine to 5000RPM and it won't shift in 3rd. Once warmed
up, everything is ok as expected from from an automatic.

I have noticed the same thing on my 2006 Yaris. In cold weather the
auto will not shift from second into third until it has warmed up at
least a little. You end up driving down the street with the revs
really high because it doesn't shift. I don't know if this means
that you should let the car warm up. I thought that warmups for
modern cars were generally unnecessary.

cordially, as always,

rm

I have absolutely no problems with my car's shifting. Of course, I do it
myself. It has a manual transmission.

Jeff

#12

"Octavio" <octo22 (AT) yahoo (DOT) com> wrote

Quote:

"Ray O" <rokigawaATtristarassociatesDOTcom> wrote in message
news:e69$463acba7$47c2b532$20317 (AT) msgid (DOT) meganewsservers.com...

"Octavio" <octo22 (AT) yahoo (DOT) com> wrote in message
news:Vju_h.14137$pA6.85916 (AT) weber (DOT) videotron.net...

Just wondering one weird thing about the 4-gear automatic transmission
in this car.

When engine and transmission are cold and after I started the engine and
start driving, the transmission stay lock in second gear (not the third,
the second gear...) for one or two hundred feet then finally goes in
third for a while as it warms up then the overdrive gear can kick in.
I do know many automatic transmission stay locked in third gear until
they warm up but... the second gear is new for me.

Is it normal?

Octavio

That is normal operation of the automatic transmission. If you were to
immediately drive at higher speed, the transmission would upshift from
2nd to 3rd.
--

Nope, it won't! It *stays* in 2nd for a few hundred feet. I can rev the
engine to 5000RPM and it won't shift in 3rd.
Once warmed up, everything is ok as expected from from an automatic.

It sounds like your engine and transmission and automatic transmission are
operating as designed. They are designed this way to get the engine to
operate in closed loop mode more quickly to lower emissions.

When I said "immediately," I meant within a few hundred feet. If you need
to accelerate from zero to over 50 MPH within the first two hundred feet of
vehicle travel after a cold soak, then the smart move would be to wait at
least 30 seconds before starting the acceleration run.
--

Ray O
(correct punctuation to reply)

#13

"Hachiroku ãƒãƒãƒ*ã‚¯" <Trueno (AT) AE86 (DOT) gts> wrote

Quote:

On Fri, 04 May 2007 21:52:09 +0000, Jeff wrote:
...

Quote:

I have absolutely no problems with my car's shifting. Of course, I do it
myself. It has a manual transmission.

Jeff

Yeah, that's the best way to control how a tranny operates!

For the first few hundred feet, I rarely exceed 2,000 rpm in 3rd gear,
anyway...

I try and keep the engine going slowly, all the time, especially, when it's
cold. But, unless it is real cold out, I just start the car and go slowly. I
figure the engine has to turn whether the car is moving or not, and I know
of no reason why I should just sit there, wasting time and gas.

Jeff

#14

"Hachiroku ãƒãƒãƒ*ã‚¯" <Trueno (AT) AE86 (DOT) gts> wrote

Quote:

On Fri, 04 May 2007 23:53:05 +0000, Jeff wrote:

"Hachiroku ãƒãƒãƒ*ã‚¯" <Trueno (AT) AE86 (DOT) gts> wrote in message
news:ZsP_h.236$wy2.55 (AT) trnddc03 (DOT) ..
On Fri, 04 May 2007 21:52:09 +0000, Jeff wrote:
...

I have absolutely no problems with my car's shifting. Of course, I do
it myself. It has a manual transmission.

Jeff

Yeah, that's the best way to control how a tranny operates!

For the first few hundred feet, I rarely exceed 2,000 rpm in 3rd gear,
anyway...

I try and keep the engine going slowly, all the time, especially, when
it's cold. But, unless it is real cold out, I just start the car and go
slowly. I figure the engine has to turn whether the car is moving or not,
and I know of no reason why I should just sit there, wasting time and
gas.

Jeff

I always give it at least two minutes. Let the rings get friendly with the
cylinders. Very rarely do I hop in, turn the key and go unless the engine
has already been run and the needle isn't flat on the gauge.

Do you have any evidence that this makes any difference? I mean, except
giving more money to me, because I own a small portion of ExxonMobil?

Jeff

#15

"Jeff" <news (AT) googlemail (DOT) com> wrote

Quote:

snipped>. I
figure the engine has to turn whether the car is moving or not, and I know
of no reason why I should just sit there, wasting time and gas.

Jeff
That is because there isn't one!

--

Ray O
(correct punctuation to reply)

#16

"Hachiroku ãƒãƒãƒ*ã‚¯" <Trueno (AT) AE86 (DOT) gts> wrote

Quote:

On Sat, 05 May 2007 02:28:19 +0000, Jeff wrote:

"Hachiroku ãƒãƒãƒ*ã‚¯" <Trueno (AT) AE86 (DOT) gts> wrote in message
news:V9R_h.761$XG1.72 (AT) trndny07 (DOT) ..
On Fri, 04 May 2007 23:53:05 +0000, Jeff wrote:

"Hachiroku ãƒãƒãƒ*ã‚¯" <Trueno (AT) AE86 (DOT) gts> wrote in message
news:ZsP_h.236$wy2.55 (AT) trnddc03 (DOT) ..
On Fri, 04 May 2007 21:52:09 +0000, Jeff wrote:
...

I have absolutely no problems with my car's shifting. Of course, I do
it myself. It has a manual transmission.

Jeff

Yeah, that's the best way to control how a tranny operates!

For the first few hundred feet, I rarely exceed 2,000 rpm in 3rd gear,
anyway...

I try and keep the engine going slowly, all the time, especially, when
it's cold. But, unless it is real cold out, I just start the car and go
slowly. I figure the engine has to turn whether the car is moving or
not, and I know of no reason why I should just sit there, wasting time
and gas.

Jeff

I always give it at least two minutes. Let the rings get friendly with
the cylinders. Very rarely do I hop in, turn the key and go unless the
engine has already been run and the needle isn't flat on the gauge.

Do you have any evidence that this makes any difference? I mean, except
giving more money to me, because I own a small portion of ExxonMobil?

Jeff

1978 Corolla 1200: 128,000 miles, no smoke or low compression.
1980 Corolla 1800: 244,000 miles. no smoke or low compression.
1985 Corolla GT-S: 259,000 miles, no smoke or low compression.
1988 Honda Accord: 188,000 miles, no smoke or low compression.

And I have never used Exxon or Mobil gas ever. Perhaps yet another reason
why these engines never had any smoke or low compression...

Or, perhaps, the brand of gas and the letting the cars warm up only
increased your gas bill.

In other words, this is no better than superstition.

Jeff

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Yaris 2007

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