Firenza L4-112 1.8L VIN 0 TBI (1982)
Vacuum Pump: Description and Operation
Mechanical Cruise Control
Fig. 2 Aspirator vacuum assist cruise control schematic
Supplementary vacuum assist, Fig. 2, is used on some models to allow proper system operation under various driving conditions. An auxiliary vacuum
pump or aspirator is used to help supply additional vacuum to the cruise control system components at times of low engine vacuum.
