There are actually two water temperature sending unit on a 1994 S10 Chevy. Please locate the unit close to the thermostat housing, and not the one between spark plugs. The single wire water temperature sending unit should then be attached to the temperature gauge. The two wire unit, the one between spark plugs, would be connected to the engine control module.
It should be located on the front of the water pump.
The oil pressure switch is near the oil filter and the water temperature sender is located near the thermostat housing. The fuel sending is in the fuel tank mounted on the fuel pump module.
The temperature sending unit it on the front of the engine. It is on the top just beside of the water intake.
The water temperature sending unit is on the front of the engine. It is next to the top water hose inlet connection.
it screws into the side of one of the heads.
There is a temp sensor on the water inlet for the PCM, and sending units for the gauge on the side of the heads. Normally part stores don't carry the sending units.
Water sending unit: Drivers side head up front between the first 2 spark plugs. Oil sending unit is behind the distributor screewed into the top of the engine block.
NO they are not the same.
its screwed in on the front of the water pump
180, to 200.
Remove the tail gate then replace water temperature sensor.
yes it has both. at least in my 1991 ford ranger does