You can fix the speedometer in your 1994 Oldsmobile 98 by replacing the speedometer cable. If changing the speedometer cable does not fix your speedometer you will need to replace the entire speedometer.
how to fix speedometer for Toyota mr2
Toyota should recall them, seriously, there have been over 1000 complaints of this same problem on the 2002 Toyota Camry - check google.
I need to fix the odometer and speedometer in a 97 ford explorer
Send to a speedometer repair shop or replace speedometer head
If the speedometer is not working it probably needs a new speedometer cable. If the speedometer is actually broken either take it to as speedometer repair shop or replace it.
Most likely speedometer cable
May have to take the truck to a certified speedometer repair shop
My 89Chevrolet astro van digital speedometer stop working. How do I fix it
May have to take it to a certified speedometer repair shop
By replacing it.
spray graphite on it(the cable)