S Light on a honda accord

My girlfriend has a 1990 Accord LX Automatic, theres a S light on the lower
right of the dash. It flashes after driving it about 2 minutes. The
speedometer is not working, my ? is what is the S light. I think its a
transmission code but not sure. Im thinkin it needs a speedsensor since the
speedometer isnt workin. But i have not looked it to it yet. What all should
i check for the speedometer? thanks guys.

 

The "S" light indicator should be for the sport mode of your transmission.
There is a button on the side of your transmission select lever (console
stick shift) if you push that will turn off the lamp and put your trans back
to normal mode.

 

the 's' light on my 1990 prelude comes on if there is a problem with the
auto box.
the chilton manual has no mention of what to do,but the local honda garage
may help,if you want to pay that much!!!
cheers
hope this helps

 

As far as your speedometer issue goes, I do believe you have an
electronic VSS (vehicle speed sensor) instead of a cable VSS. These
run anywhere from $15-$100+ depending where you shop around. You
should check with your Helm's manual and troubleshoot it yourself (if
you can change your oil, then you can check if your VSS is bad). Other
than that, what the others have said about the "S" light is right on
the money. Hope this helps.

 

does she has any weird problems starting up yet?, and yes 90 has vss, doesnt
necessary means that vss is cooked, could be main relay as well, flashing
"s" could be tripped by tranny, what's the millage on that accord?