Tachometer

I have a 1994 940 Volvo that has aprox. 270,000 miles. It has been running like new. Today when I went to start it, all the dashboard lights came on and the tachometer didn't move at all. I drove it around the block and it ran fine but I put it back in the garage anyway.

Five years ago I had a 2000 S40. While driving the tachometer swung into the red, all the dashboard lights came on and the engine kept bolting. There was crack that would have cost $4000 to fix so I got rid of the car. I really don't want to get rid of the 940.

Since the car is so old a lot of things have been sticking, i.e., the motor for one of the windows, and the air conditioner doesn't work but otherwise everything has been fine.