Why does my automatic transmission not shift out of second gear when the car is cold 1990 Acura Integra GS?

Answer 1

Try changing Transmission Fluid and filter, wrote the first contributor ---------------------------------------- If you find a method, please post it. My latest attempt is to lay a strong magnet on the drain plug--which has no magnet--and hope to pick up some of the alleged debris. I do not understand why, once it frees up, the material is not suspended and does not come out with the dfrain. I have not cleaned solenoids A and B yet and have not tried another TCU. Am not getting codes. If "debris in the (internal) modulator valve" is the problem, is there any way to clear it without dismantling the trans? If "debris" is not the problem, what might it be? I replaced one, but not both, temp sensors. As the problem worsens, it does feel as if crud it clogging a valve, but how to free it? Is there a filter? Where? Stuart sfiller@ameritech.net --------------------------------------------------