[V8] Engine Speed Sensor

[bblake1055 at aol.com]

I finally broke down and bought the Ross-Tech software for the V8
 
The car has not been running for several months now due to no fuel (it would start with starting fluid and then stall)
 
The only fault reading was 
 
"Engine Speed Sensor" - No signal
 
If that's true I guess it sends a signal to the fuel pump.
 
So---- my question is: Where is the sensor located and is this part readily available???
 
Thanks for any help
 
Bob Blake
 
90 V8
91 V8
92 V8
93 V8
93 V8 5 spd