Weird transmission issues on a '95 Celica AT (possibly electrical) Options

[deadwolfbones]

Today I was driving home from work on the interstate at 75mph and suddenly the Overdrive Off light came on my dash, then it disappeared, then it came on again, and it kept flicking back and forth like that (with resulting gear shifts/RPM changes) until I manually pressed the toggle off and on again (probably 4-5 on/off cycles). After I manually toggled the switch, it stopped doing it for the remainder of the drive.

Any idea what might have caused this, whether it's a symptom of a larger problem, or what it might cost to fix if a cost is necessary?

The car is running perfectly otherwise, btw.

This post has been edited by deadwolfbones: Nov 13, 2012 - 11:16 PM

[deadwolfbones]

New update. Car did another weird thing today.

I was in stop & go traffic on the interstate forever, basically, and after a while I noticed it was having a hard time getting going again after traffic had come to a stop. Eventually realized it was staying in 2nd gear and not shifting down to 1st.

I drove like that the rest of the way home. Once I got home, I put it in park, then back in drive, and it was still launching in 2nd. I put it in 1st manually and it behaved as it normally would in 1st gear. Back to Drive... still tried to launch in 2nd.

So I turned the car off, started it back up, put it in drive... 1st gear, totally normal. I took it out for a quick drive and it never repeated the odd behavior.

I figure there's some kind of weird electrical glitch going on, but I have a feeling it's still gonna cost me big bucks, even if it isn't mechanical.