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Vacuum Switch C

  1. Disconnect vacuum hose No. 14 at control box at the vacuum hose manifold and connect a vacuum pump to the hose. Remove the control box from the firewall and remove the cover.
  2. Check for continuity between the vacuum switch terminal leads. There should be continuity when vacuum above 3.9 in. Hg vacuum is applied. There should be no continuity when vacuum is released.
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