A potential bad gauge or sender unit in the tank would cause it to read full all the time.
You need to check the radiator and be sure it is full. It can be empty and the overflow tank full. If it is full then check and be sure the radiator cooling is working when the engine is at operating temperature.
You need a new fuel pump
A short in a wire or a failure of gauge or sender.
Faulty signal sender in the tank.
Radiator could be plugged or restricted
a bad sending unit in the gas tank.
fuel sending unit
The fuel gauge on a 1985 Chevy Silverado will read full all the time if the sending unit is defective or the wire has come loose. When the tank is full, the sending unit normally shuts off which cause the gauge to read full.
Would not recommend using a full choke or even a 20 gauge, 12s are much better
If only the temperature gauge does not work, then a fuse is not the problem. Be sure that the radiator is full. If not you will need to fill it as the temperature sender needs water around it in order to have something to sense. If it is full then take it to a repair shop and have them check it out.
You bet! keep that baby full at all times
it may be a defective sending unit or sensor.
clogged radiator bad water pump bad thermostat fan not working loose belt
I would assume that the wires are hooked up backwards
The tanks on the radiator are plastic and the lines vibrate causing the tanks to leak were they screew into the radiator. REPLACE RADIATOR.
If you have an old ISUZU Trooper, the radiator thermostat may be not working. Therefore, it will not let cool water from the radiator into the hot engine, even if the radiator is full. Have the thermostat checked and replaced, if necessary. Good Luck
Either there is a short in the fuel sender wiring or the sender in the tank is bad.The actual gauge is rarely bad.Good luck.
Levels are probably not fine. Check the radiator not the overfow tank for proper level. The radiator should be full to the top.
Assuming RAD stands for radiator . . . Chances are your thermostat is stuck closed. Replace it.
Did you ever find out why? My son just ran out of fuel with the same situation.
Air trapped in the cooling system, try replacing the radiator cap and be sure the reservoir is full to line, it should bleed itself out.
It probley has an AIR pocket in the cooling system. Bleed the air out of the system and make sure it is full of fluid.
Bad sending unit. This is what reads the tank level and sends it to the gauge.