Bloodhound1981
Full Access Member
- Joined
- Nov 15, 2016
- Posts
- 211
- Reaction score
- 468
- Location
- MA
- First Name
- Rusty
- Truck Year
- 1981
- Truck Model
- C-10
- Engine Size
- 5.7
This is probably a rudimentary question, but what is the proper way to test the wiring and gauge for a 3 wire pressure sensor? I have a Holley 0-100 psi sensor attached to my fuel pressure regulator. I am suddenly getting no reading from the sensor, but it is not because of a lack of fuel pressure. This sensor is very new, not that that means anything these days. I know that one wire should be 5 volts reference from the ECU, one is the signal from the sensor, and the other is ground. Do I jump the 5 volt reference to the sensor signal wire, and ground the ground wire in order to check for gauge movement? A new sensor is like $140 so trying to verify that is the problem. I am running a Holley HP ECU so I just don't want to do something dumb to hurt it. Thanks.
