1991 Honda Accord transmission problems

You Need to replace your TCU located behind the kick panel on the passenager side of the interior of the car. (Transmission control unit)

usually the problem is the TCM or transmission control module. They are known to go bad. If transmission is working ok then this is most likely the problem.

Losen the fuel cap and then see if you are still getting the problem.Sounds like your breather pipe at the tank is blocked.good luck

Take it up to a transmission shop. When the light flashes it indecates there is a problem with the transmission the longer you wait the more damage it causes.

change the transmission sensor...they are outside of tha transmission

the light is on to indicate a hard fault is present in the transmission controls, you will need to have the system tested to find out exactly what the fault is.

Main Fuel injector relay is probably the culprit. Buy a second hand one for about 50 bucks and replace it yourself within 30 minutes.

Have you mistakenly push the "sport"button at the gear shift knob? Because if you do so, the S ligh will stay on.

Last year in the summer of 2007 I had the same problem with my 1991 Accord dx. I replaced the Transmission Control Unit (TCU) and the light went out and the car has been driving fine every since.

I have honda accord 91 for more than 6 yrs. If the S light comes on ,it means one of the sensors are not working. it has nothing to do with transmission. It could happen sometimes during rain , or cleaning as the computer controller is under driver seat.
Once the S light blinks or comes on . Stop the car and take ignition off and wait for a minutes and put ignition again , it will be gone and will change in the speed and gear shifting will be different.
Hope it will help