1 The sending unit for the fuel gauge is broken.
1 Fix, drop the the tank. Or remove the bed. On the top of the tank is 2 circle shaped caps. One has metal hoses and wires (fuel pump) and the other smaller of the 2 has just wires fuel gauge sending unit. The gas gauge sending unit is a dealer part. Some used parts shops have them but you run the risk of having to fix the issue again.
2 The gauge it's self is bad.
2 Fix, Go to Walmart. Buy a cheap gas gauge. Remove the gauge cluster from the truck and run jumpers wires from the old fuel gauge to the new. Turn the key on and enjoy. Or buy a used gauge cluster and plug and play.
Because it's stuffed
Where is the fuel pump relay switch located on a 1994 Toyota pickup
The fuel pump for a 1979 Toyota Pickup is in the fuel tank. Drop the fuel tank and unbolt the fuel pump from the top for a 20R engine.
To check the fuel pressure on a 3.0 V6 Toyota pickup, you'll need a fuel pressure gauge. First, locate the fuel pressure test port, which is usually found on the fuel rail. Remove the cap from the test port, then connect the gauge to the port and turn the ignition key to the "ON" position without starting the engine to allow the fuel pump to pressurize the system. The gauge should read between 30-40 psi; if it's outside this range, it may indicate a fuel delivery issue.
fuel gauge not working
The fuel filter is located on the firewall on a four cylinder 1995 Toyota pickup truck!
In the fuel tank.
its located in the fuel tank
in the gas tank
on the side
fuel sending unit is bad.
You have to use a fuel pressure gauge. If you do not have it you can purchase it for about $40. You might want to call Autozone and ask if they have one to lease.