See Figures 1 through 22
Following are vacuum diagrams for most of the engine and emissions package combinations covered by this manual. Because vacuum circuits will vary based on various engine and vehicle options, always refer first to the vehicle emission control information label, if present. Should the label be missing, or should vehicle be equipped with a different engine from the vehicle's original equipment, refer to the diagrams below for the same or similar configuration.
If you wish to obtain a replacement emissions label, most manufacturers make the labels available for purchase. The labels can usually be ordered from a local dealer.
Fig. Fig. 1: All vehicles should be equipped with a label comparable to the one shown
Fig. Fig. 2: Vacuum hose routing label-1989 3.9L engine
Fig. Fig. 3: Vacuum hose routing label-1989 5.2L engine
Fig. Fig. 4: Vacuum hose routing label-1989 5.9L light duty Federal, Canadian, and High Altitude engines
Fig. Fig. 5: Vacuum hose routing label-1989 5.9L heavy duty engine without EGR solenoid
Fig. Fig. 6: Vacuum hose routing label-1989 5.9L heavy duty Federal, California and Canadian engines
Fig. Fig. 7: Vacuum hose routing label-1991 Federal 2.5L engine
Fig. Fig. 8: Vacuum hose routing label-1991 California 2.5L engine
Fig. Fig. 9: Vacuum hose routing label-1991 Canadian 2.5L engine
Fig. Fig. 10: Vacuum hose routing label-1991 Federal 3.9L engine
Fig. Fig. 11: Vacuum hose routing label-1991 California 3.9L engine
Fig. Fig. 12: Vacuum hose routing label-1991 Canadian 3.9L engine
Fig. Fig. 13: Vacuum hose routing label-1991 heavy duty 5.9L engine
Fig. Fig. 14: Vacuum hose routing label-1992 Federal 3.9L engine
Fig. Fig. 15: Vacuum hose routing label-1992 California 5.9L engine
Fig. Fig. 16: Vacuum hose routing label-1993 Federal 5.2L engine
Fig. Fig. 17: Vacuum hose routing label-1993 California 5.2L engine
Fig. Fig. 18: Vacuum hose routing label-1993 Canadian 5.2L engine
Fig. Fig. 19: Engine vacuum schematic-1994-95 2.5L engine
Fig. Fig. 20: Engine vacuum schematic-1994-95 3.9L and 5.2L engines
Fig. Fig. 21: Engine vacuum schematic-1994-95 5.9L heavy duty engine
Fig. Fig. 22: Engine vacuum schematic-1994-95 8.0L engine
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