ES300 shifts early when cold

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Old 09 Nov 2004, 07:47 pm   #1 (permalink)
Rog
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Default ES300 shifts early when cold

I recently purchased a 1997 ES300 and I noticed it always tends to shift too
early when it's not fully warmed up. You could be flooring it and it won't
go past 3-4k rpm until it upshifts. When warm, it acts fine but it always
shifts about 1k rpm before redline begines. I had a 97 Camry V6 before and
I don't remember it doing this.

Any ideas?


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Old 09 Nov 2004, 09:48 pm   #2 (permalink)
RR
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Default Re: ES300 shifts early when cold

On Wed, 10 Nov 2004 01:47:23 GMT, "Rog" <anon@blog.com> wrote:

>I recently purchased a 1997 ES300 and I noticed it always tends to shift too
>early when it's not fully warmed up. You could be flooring it and it won't
>go past 3-4k rpm until it upshifts. When warm, it acts fine but it always
>shifts about 1k rpm before redline begines. I had a 97 Camry V6 before and
>I don't remember it doing this.
>
>Any ideas?


This would happen if you're not getting enough power. Have you had
a tune up lately? But it would have to be REALLY out of tune.

I had similar problems twice and it turned out to be bad spark plug
wires the first time and a broken rotor cap the second.
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Old 09 Nov 2004, 10:21 pm   #3 (permalink)
Chris Aseltine
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Default Re: ES300 shifts early when cold

"Rog" <anon@blog.com> writes:

> I recently purchased a 1997 ES300 and I noticed it always tends to shift
> too early when it's not fully warmed up. You could be flooring it and it
> won't go past 3-4k rpm until it upshifts. When warm, it acts fine but
> it always shifts about 1k rpm before redline begines. I had a 97 Camry
> V6 before and I don't remember it doing this.


Perhaps the ECU/TCU are trying to prevent excessive engine wear by
preventing high RPM operation before the engine is warmed up?


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Old 09 Nov 2004, 11:43 pm   #4 (permalink)
Rog
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Default Re: ES300 shifts early when cold

It had a full tuneup around 1000 miles ago. Unfortunately this car has
ignition coils so they should be good. Otherwise when warm, it runs evenly
and has the power it should.

"RR" <rr@not.net> wrote in message
news:3p33p050sg4nrfrqv61j2udm5h3c6e710t@4ax.com...
> On Wed, 10 Nov 2004 01:47:23 GMT, "Rog" <anon@blog.com> wrote:
>
> >I recently purchased a 1997 ES300 and I noticed it always tends to shift

too
> >early when it's not fully warmed up. You could be flooring it and it

won't
> >go past 3-4k rpm until it upshifts. When warm, it acts fine but it

always
> >shifts about 1k rpm before redline begines. I had a 97 Camry V6 before

and
> >I don't remember it doing this.
> >
> >Any ideas?

>
> This would happen if you're not getting enough power. Have you had
> a tune up lately? But it would have to be REALLY out of tune.
>
> I had similar problems twice and it turned out to be bad spark plug
> wires the first time and a broken rotor cap the second.



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Old 09 Nov 2004, 11:47 pm   #5 (permalink)
Philip
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Default Re: ES300 shifts early when cold

Rog wrote:
> I recently purchased a 1997 ES300 and I noticed it always tends to
> shift too early when it's not fully warmed up. You could be flooring
> it and it won't go past 3-4k rpm until it upshifts. When warm, it
> acts fine but it always shifts about 1k rpm before redline begines.
> I had a 97 Camry V6 before and I don't remember it doing this.
>
> Any ideas?


It's called NORMAL operation. My 2003 Corolla does the same thing too.
--

-Philip


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Old 10 Nov 2004, 07:11 am   #6 (permalink)
m Ransley
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Default Re: ES300 shifts early when cold

Old trans oil will affect it, Do a full tune up also

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Old 10 Nov 2004, 08:22 am   #7 (permalink)
dulles
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Default Re: ES300 shifts early when cold

My 1994 ES300 does the same thing. Always has. Prolly the fluid in the
tranny warming up.

-d
"Rog" <anon@blog.com> wrote in message
news:Aqekd.21765$5K2.8607@attbi_s03...
> I recently purchased a 1997 ES300 and I noticed it always tends to shift

too
> early when it's not fully warmed up. You could be flooring it and it won't
> go past 3-4k rpm until it upshifts. When warm, it acts fine but it

always
> shifts about 1k rpm before redline begines. I had a 97 Camry V6 before

and
> I don't remember it doing this.
>
> Any ideas?
>
>



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Old 10 Nov 2004, 10:37 am   #8 (permalink)
Philip
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Default Re: ES300 shifts early when cold

m Ransley wrote:
> Old trans oil will affect it, Do a full tune up also


Cold ATF does not affect shift points. In case you didn't know, the
transmission shift points are controlled by its own ECU ... which uses
engine coolant temperature to alternate between two basic shift programs.

--

-Philip


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Old 10 Nov 2004, 11:59 am   #9 (permalink)
m Ransley
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Default Re: ES300 shifts early when cold

Well Phil come to where it goes to -20, even at + 10 alot of things
happen with dirty oil. at -15 last year I wouldnt shift... New oil and
filter fixed it fine. Or didnt you know oil thickens when cold the
colder the thicker it gets.

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Old 10 Nov 2004, 05:31 pm   #10 (permalink)
Philip
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Default Re: ES300 shifts early when cold

m Ransley wrote:
> Well Phil come to where it goes to -20, even at + 10 alot of things
> happen with dirty oil. at -15 last year I wouldnt shift... New oil and
> filter fixed it fine. Or didnt you know oil thickens when cold the
> colder the thicker it gets.


Sorry Ransley. ATF does not get fouled with carbon, acids, and gasoline.
With lower temperatures, ATF thickens just like any other lubricant. This
affects shift firmness only .... not shift points.

I spent 7 yrs in an automatic transmission shop overhauling and modifying
automatics in RVs. Good chance I've forgotten much more than you know on
the subject.

--

-Philip


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