Following are vacuum diagrams for most of the engine and emissions package combinations covered by this guide. 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.
See Figures 1 through 10
Fig. Fig. 1: The emissions control label is usually affixed to the underside of the hood and contains vacuum diagrams of the engine equipped on the vehicle
Fig. Fig. 2: The calibration code label is usually affixed to the door pillar on the driver's side. The calibration code will be required for ordering parts for most electronic engine controlled components and emissions equipment
Fig. Fig. 3: 1996-97 3.0L OHV (2 valve) engine
Fig. Fig. 4: 1996 3.0L OHC (4 valve) engine
Fig. Fig. 5: 1996-99 3.0L OHV (2 valve) flexible fuel engine
Fig. Fig. 6: 1996-99 3.4L OHC (SHO) engine
Fig. Fig. 7: 1997 3.0L OHC (4 valve) engine
Fig. Fig. 8: 1998-99 3.0L OHV (2 valve) engine
Fig. Fig. 9: 1998-99 3.0L OHV (2 valve) engine with California emissions
Fig. Fig. 10: 1998-99 3.0L OHC (4 valve) engine