I have a 92 Volvo 960. I have a flashing arrow sign and the speedometer stopped.

This means the transmission computer has registered a fault with the transmission. A fault can be recorded for many different reasons, so it's best not to guess what the cause, or fix might be. You can read the codes without any tools, just search for the instruction, pull the codes from the engine and transmission computers, post them and we can offer better advice.