If it reads hot after the vehicle has been standing overnight, it is dead and needs replacing.
They don't have fuses. The speedometer is controlled by the speed sensor(s) and the temperature gauge is controlled by the coolant temperature sensor.
It's in the instrument cluster.
A short between the heater switch and temperature gauge.
Engine is overheating, faulty gauge, faulty temp sensor......
no power at the sending unit.
Somewhere between 180 and 210 degrees but no hotter.
There's probably 1 for the cluster. if it's acting up, check sender.
Try checking Fuse #7 10amp under the dash. This is for a 1997 model.
In my experience with my Chevy it was a ground wire
Ground the temperature sending unit and the gauge should go to hot. If it does not the the gauge is defective. The instrument cluster will have to be sent off for repair. had the same problem, check for bad fuse located in fuse box under the hood on drivers side.
It will bolt up, but the manifolds, flywheel, wiring are different. Also the 1997 head does not have a hole in the rear for the temperature gauge sensor.
The normal operating temperature for a 1997 Oldsmobile LSS engine typically ranges between 195°F and 220°F (90°C to 104°C). It is important to monitor the temperature gauge; if it consistently exceeds 220°F, it could indicate overheating issues that need to be addressed. Always consult the owner's manual for specific guidelines related to your vehicle.