I have a 91 accord auto trans. How can you bypass the sport switch on the trans. My comes on when it wants.?

Question

You can be driving down the road at 55mph at 2200 rpm, and
it comes on and it will be stuck in 2 gear for a while and it will be 3000rpm at 45mph. It seems to come on more when its warm outside. Can someone help. Thanks

Answer 1

The S light isn't the reason your car is malfunctioning; it is the indicator to let you know that the computer that controls the transmission has detected a problem in the transmission control system. The light comes on to let you know that there is a problem; it is not telling you that you are in sport mode and that the transmission is acting improperly because you are in sport mode when you shouldn't be. does that make sense?

When that sport light is put on by the transmission control unit to tell you there is a problem, the control unit will store a diagnostic trouble code to indicate what circuit or component is malfunctioning. In many cases it is a problem with a sensor, such as a vehicle speed sensor. when a speed sensor fails the computer doesn't know how fast the car is going and can't judge what gear the trans should be in so it goes into a 'fail safe' mode using pre-programmed values so that you can still drive the car. That sounds like what you are describing.

There are several sensors and solenoids. If you want to fix the car, you'll need to take the car to a Honda dealer to have them retrieve the diagnostic code and to determine which part is at fault. Because of the age of the vehicle, I'd recommend the dealer as they have the diagnostic tools and manuals for the older cars rather than taking it to a trans shop or independent who doesn't have access to those resources. You can pay for "diagnosis only" and make a decision on what to do or who should do it after they determine what's required.

hope that helps

Answer 2

My best guess would be something to do with the ECU componet but because I don't have a auto trans. I really wouldn't know but if you take it to a shop they could hook it up to a computer for 80 dollars.