I have a 1992 300se when I'm driving the ASR light comes on and the transmission shifts something like that as if I'm driving in the wrong gear

SOURCE: Transmission won't shift

The car is going into what is called "limp mode". It's detecting a problem of some sort that is drivetrain-related (which could mean a faulty sensor or transmission controller, or a fault with the engine), and it's locking the transmission into second gear to protect it from excessive road speed and RPM. Do you have a check-engine light on? Whether you do or not, you may have a stored fault code in the car that can be read with a code scanner, and if so, that'll be a good starting point. If you can get the car scanned, it'd help a lot - post back up with what you find out and we'll take it from there.

SOURCE: transmission shifts hard down from highway gear only (D>3rd)

I had the same thing! It was a computer issue. It only cost me about $35.00.

SOURCE: 2002 Lincoln LS V8, gear shift shows E, check transmission light

sounds like tranny computer is bad take it to a grage and have a computer put on it cost about $50.00 to do this

SOURCE: 02 Neon won't shift out of second gear in Drive

Sounds like the valve body is loose, warped or blown

SOURCE: Transmission or Engagement issue?

I had the same problem with my 2006 Forenza - the problem was the transmission range sensor. If you look under the hood, on the drivers side, you'll see your trans. cable connected to a round part that also has an electrical cable coming from it. That is it. Part costs $36.07 at oemsuzukiparts.com (search for Neutral safety switch in the mechanical catalog).