Vacuum Pump: Notes

The vacuum pump is designed to aid the engine in maintaining a proper vacuum level for the power brake system and other vacuum operated accessories. The vacuum pump is a diaphragm type pump which requires no periodic maintenance.

The vacuum pump on 2.2L engines is belt-driven. Vacuum pump on 6.2L engines are either belt-driven or gear-driven.

Gear-driven pump is driven by a cam inside drive assembly to which it mounts. Drive housing assembly has a drive gear on lower end, which meshes with cam gear in the engine. Drive gear causes cam in drive housing to rotate.