D250 3/4 Ton Pickup 2WD L6-225 3.7L VIN H 1-bbl (1983)
Manifold Pressure/Vacuum Sensor: Specifications
All models with TBI.
Apply 5" (125mm) Hg to unit and record output voltage. Apply 20" (500mm) Hg to unit, the difference in voltage should be 2.3 - 2.9.