transmission problems

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Old 01 Jul 2012, 10:32 am   #1 (permalink)
Jack
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Default transmission problems

1993 Corolla 1.8 L; LE trans with overdrive; 399,800 km.

- When starting from cold sometimes the transmission is slow to shift up.
- When stopped and put into reverse, it may thump as the drive engages
suddenly.
- On occasion when driving at around 70 km/h, the car has momentarily gone
out of overdrive possibly into 3rd or 2nd gear.
- Sometimes the dashboard warning 'overdrive turned off' lights.

Any advice would be appreciated - Thanks, Jack.
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Old 01 Jul 2012, 10:24 pm   #2 (permalink)
hachiroku
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Default Re: transmission problems

On Sun, 01 Jul 2012 14:32:19 +0000, Jack wrote:

> 1993 Corolla 1.8 L; LE trans with overdrive; 399,800 km.
>
> - When starting from cold sometimes the transmission is slow to shift up.
> - When stopped and put into reverse, it may thump as the drive engages
> suddenly.
> - On occasion when driving at around 70 km/h, the car has momentarily gone
> out of overdrive possibly into 3rd or 2nd gear.
> - Sometimes the dashboard warning 'overdrive turned off' lights.
>
> Any advice would be appreciated - Thanks, Jack.


The transmission is thermally controlled, by the engine temp sensor, and
the ECU will not allow the trans to shift up too quickly when cold.

As far as the clunking, I AM assuming you are STOPPING the car first!
If so, when was the last time you did a drain and fill and changed the
filter? Gunk can collect and cause this to happen. As far as the last one....????

I would do a drainand fill with a new filter and see what happens. What
color is the trans fluid?

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Old 02 Jul 2012, 02:55 pm   #3 (permalink)
Jack
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Default Re: transmission problems

hachiroku <haciroku@e86.GTS> wrote in
news:4ff10644$0$1575$c3e8da3$f6268168@news.astrawe b.com:

> On Sun, 01 Jul 2012 14:32:19 +0000, Jack wrote:
>
>> 1993 Corolla 1.8 L; LE trans with overdrive; 399,800 km.
>>
>> - When starting from cold sometimes the transmission is slow to shift
>> up. - When stopped and put into reverse, it may thump as the drive
>> engages suddenly.
>> - On occasion when driving at around 70 km/h, the car has momentarily
>> gone out of overdrive possibly into 3rd or 2nd gear.
>> - Sometimes the dashboard warning 'overdrive turned off' lights.
>>
>> Any advice would be appreciated - Thanks, Jack.

>
> The transmission is thermally controlled, by the engine temp sensor,
> and the ECU will not allow the trans to shift up too quickly when
> cold.
>
> As far as the clunking, I AM assuming you are STOPPING the car first!
> If so, when was the last time you did a drain and fill and changed the
> filter? Gunk can collect and cause this to happen. As far as the last
> one....????
>
> I would do a drainand fill with a new filter and see what happens.
> What color is the trans fluid?
>
>


Thanks for the reply Hachiroku.

Do I remove a bottom pan to change the filter? I have never serviced
this transmission and, so far as I know, nobody else has either. The
fluid is clear red and looks like new.

Yes, I do stop, for a short time, before reversing! (Possibly our
professor of epistemology would have found this issue amusing.)

The engine has been running quite cool since I put on a trans cooler in
2003. Two winters ago it was just barely able to heat the interior
comfortably at highway speeds on a long drive. I checked the thermostat
in boiling watrer and it opens and closes as expected. Possibly the
trans cooler is conected before the rad instead of after, and is
excessively cooling the rad?

Could the thermostat be malfunctioning despite behaving correctly on the
stove?

Thank you for your expert thoughts,
Jack.
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Old 03 Jul 2012, 08:39 pm   #4 (permalink)
That Randy Guy
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Default Re: transmission problems

On 7/1/2012 10:32 AM, Jack wrote:
> 1993 Corolla 1.8 L; LE trans with overdrive; 399,800 km.
>
> - When starting from cold sometimes the transmission is slow to shift up.
> - When stopped and put into reverse, it may thump as the drive engages
> suddenly.
> - On occasion when driving at around 70 km/h, the car has momentarily gone
> out of overdrive possibly into 3rd or 2nd gear.
> - Sometimes the dashboard warning 'overdrive turned off' lights.
>
> Any advice would be appreciated - Thanks, Jack.
>



GET THE **** OUTTA HER YOU ****ING ASSHOLE!

Go on get lost now FAGGOT ****ER ASSHOLE


****ing faggot!


--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
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Old 03 Jul 2012, 10:28 pm   #5 (permalink)
hachiroku
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Default Re: transmission problems

On Tue, 03 Jul 2012 20:39:58 -0400, That Randy Guy wrote:

> On 7/1/2012 10:32 AM, Jack wrote:
>> 1993 Corolla 1.8 L; LE trans with overdrive; 399,800 km.
>>
>> - When starting from cold sometimes the transmission is slow to shift up.
>> - When stopped and put into reverse, it may thump as the drive engages
>> suddenly.
>> - On occasion when driving at around 70 km/h, the car has momentarily gone
>> out of overdrive possibly into 3rd or 2nd gear.
>> - Sometimes the dashboard warning 'overdrive turned off' lights.
>>
>> Any advice would be appreciated - Thanks, Jack.
>>

>
>
> I'm a genuine ****ING ASSHOLE!
>
> I'm a FAGGOT ****ER ASSHOLE
>
>
> --- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---


Truer words were never spoken.
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Old 03 Jul 2012, 10:31 pm   #6 (permalink)
hachiroku
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Default Re: transmission problems

On Mon, 02 Jul 2012 18:55:12 +0000, Jack wrote:

> hachiroku <haciroku@e86.GTS> wrote in
> news:4ff10644$0$1575$c3e8da3$f6268168@news.astrawe b.com:
>
>> On Sun, 01 Jul 2012 14:32:19 +0000, Jack wrote:
>>
>>> 1993 Corolla 1.8 L; LE trans with overdrive; 399,800 km.
>>>
>>> - When starting from cold sometimes the transmission is slow to shift
>>> up. - When stopped and put into reverse, it may thump as the drive
>>> engages suddenly.
>>> - On occasion when driving at around 70 km/h, the car has momentarily
>>> gone out of overdrive possibly into 3rd or 2nd gear.
>>> - Sometimes the dashboard warning 'overdrive turned off' lights.
>>>
>>> Any advice would be appreciated - Thanks, Jack.

>>
>> The transmission is thermally controlled, by the engine temp sensor,
>> and the ECU will not allow the trans to shift up too quickly when
>> cold.
>>
>> As far as the clunking, I AM assuming you are STOPPING the car first!
>> If so, when was the last time you did a drain and fill and changed the
>> filter? Gunk can collect and cause this to happen. As far as the last
>> one....????
>>
>> I would do a drainand fill with a new filter and see what happens.
>> What color is the trans fluid?
>>
>>

>
> Thanks for the reply Hachiroku.
>
> Do I remove a bottom pan to change the filter? I have never serviced
> this transmission and, so far as I know, nobody else has either. The
> fluid is clear red and looks like new.
>
> Yes, I do stop, for a short time, before reversing! (Possibly our
> professor of epistemology would have found this issue amusing.)
>
> The engine has been running quite cool since I put on a trans cooler in
> 2003. Two winters ago it was just barely able to heat the interior
> comfortably at highway speeds on a long drive. I checked the thermostat
> in boiling watrer and it opens and closes as expected. Possibly the
> trans cooler is conected before the rad instead of after, and is
> excessively cooling the rad?
>
> Could the thermostat be malfunctioning despite behaving correctly on the
> stove?
>
> Thank you for your expert thoughts,
> Jack.


THAT many miles and the trans fluid is still clear red?!?!

You must be BLESSED!

Also, adding a trans cooler should not affect the temp of the engine, and
if it does it should make it a little WARMER.

Sounds like your problem /might/ be caused because the engine is running
TOO cool, and the trans ECU is responding accordingly.


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Old 05 Jul 2012, 03:58 pm   #7 (permalink)
hls
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Default Re: transmission problems


"hachiroku" <haciroku@e86.GTS> wrote in message
news:4ff10644$0$1575$c3e8da3$f6268168@news.astrawe b.com...
> On Sun, 01 Jul 2012 14:32:19 +0000, Jack wrote:
>
>> 1993 Corolla 1.8 L; LE trans with overdrive; 399,800 km.
>>
>> - When starting from cold sometimes the transmission is slow to shift up.
>> - When stopped and put into reverse, it may thump as the drive engages
>> suddenly.
>> - On occasion when driving at around 70 km/h, the car has momentarily
>> gone
>> out of overdrive possibly into 3rd or 2nd gear.
>> - Sometimes the dashboard warning 'overdrive turned off' lights.
>>
>> Any advice would be appreciated - Thanks, Jack.

>
> The transmission is thermally controlled, by the engine temp sensor, and
> the ECU will not allow the trans to shift up too quickly when cold.
>
> As far as the clunking, I AM assuming you are STOPPING the car first!
> If so, when was the last time you did a drain and fill and changed the
> filter? Gunk can collect and cause this to happen. As far as the last
> one....????
>
> I would do a drainand fill with a new filter and see what happens. What
> color is the trans fluid?


THAT MANY MILES?
I would suspect that the tranny has opened up specs due to wear after
this period of time, and that the line pressure is too low, especially
while the unit is "cold".

I think you are going to have to refresh this tranny with parts and
money, and maybe later it will run like it used to.

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