None.

  If you want someone to help you you might start by giving vehicle make,
model, which engine you have, transmission (auto or manual) and a brief
description of the problem you are having.

 I see from the above that you have an automatic trans but I don't know
what you mean by "seems de-synch". A problem that occurs with a temp change
could be a bad sensor or a poor conection.

You don't give year, make or model so that makes diagnosing a bit more
challenging.  What does de-synch mean?  Is it auto or manual?

             Steve B.

Many temperature related problems in automatic transmissions (clearly stated
in 2nd sentence) have to do with hardened/shrunken internal rubber seals,
the seals shrink and leak fluid pressure when cold but will soften and seal
better when warm.
Only new seals will correct the leakage but an additive like Trans-X or
Lucas will often soften the seals enough to squeeze a few more miles from
the unit.

More details (make, model, year,problem) would definitely help.

Sorry for poor details, My car is a Suzuki X-90, automatic
transmission, 1997.
I know that the problem is not the transmission but one of the sensor
attached to it.
I have that problem since almost a year and nobody (transm guy or
dealer) know wich sensor is wrong.  Transm. fluid was changed and also
the coolen sensor, but the problem is still there.
The only option i have left is having some test going on all the
sensors ($$$) without knowing if it will correct the problem.

When I say that the transm, seems de-synch is because RPM goes up to
5500 to change from 1st to 2nd but 2nd to 3rd still change at 3500...
car goes from 3rd to 2nd and RPM from 3500 to 5000 several time when
cold just on the first 3 miles... after, everything works fine. When
weather is warm, transm change normal at 2500 rpm from 1st to 2nd.

So, any suggestion will be appreciate!