As im trying to hook up my EFIE. I am not getting the fluctuating voltage of 1-1.5 volts that the directions say I should be seeing.
Could my MAP be bad?
2001 GMC Savanna van.
What I think is the MAP sensor is has three wires.
Orange: no voltage (this is the one I think is suppose to be reading 1-1.5 volts)
Green: no voltage
Grey: 5.8-6.2 volts
The orange one is the one I thought should have fluctuating voltage of 1-1.5 volts