B250 3/4 Ton Van V8-318 5.2L VIN P 2-bbl (1982)
Manifold Pressure/Vacuum Sensor: Specifications
Applies to 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.