LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 1987 >> Spectrum Express >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System >> Component Testing >> Vacuum Switching Valve (VSV)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Vacuum Switching Valve (VSV)

  1. Apply battery voltage to VSV. Air should flow freely through ports A and B of valve.
  2. Remove voltage from VSV. Air should not flow through ports A and B of valve. Replace VSV if not performing as specified.
scientia non olet · About LEMON Manuals