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.
May have to take the truck to a certified speedometer repair shop
It is inside the fuel tank.
Between the radiator and the grille!
A 98 Civic does not have a speedometer cable. It is an electronic speedometer. So if you are having problems with it not working the most likely culprit is the vehicle speed sensor (VSS).
Could be your TPS (Throttle Position Sensor) is bad.
Replace the speed sensor, usually mounted on the transmission bellhousing.
Its overhaul time for your tranny sorry to say.
On my 91 Regency I replaced the computer and now the air is flowing again
yes
The ABS sensors are in each wheel - in the hub assemblies, they are not in the engine.
You have a loose connection someplace. Banging on the dash is a temporary solve ... and will never fix the problem. One needs to take the instrument cluster out and look for loose wire connections or plugs.
There is no cable.... Its electronic.