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    1988 Toyota Celica 2.0L FI 4cyl

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    GM Astro/Safari 1985-1996 Repair Guide

    VACUUM DIAGRAMS

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    Following is a listing of vacuum diagrams for many 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. Should the label be missing, or should the vehicle be equipped with a different engine from the original equipment, refer to the diagrams below for the same or similar configuration. New labels specific to your vehicle are available from the manufacturer.

    See Figures 1 through 11





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    Fig. Fig. 1: Vacuum hose routing-1985-87 with 2.5L TBI engine

     


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    Fig. Fig. 2: Vacuum hose routing-1988-90 with 2.5L TBI engine

     


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    Fig. Fig. 3: Vacuum hose routing-1985 4.3L carbureted engine (Federal)

     


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    Fig. Fig. 4: Vacuum hose routing-1985 with 4.3L carbureted engine (Federal and low altitude)

     


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    Fig. Fig. 5: Vacuum hose routing-1986-88 with 4.3L TBI engine

     


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    Fig. Fig. 6: Vacuum hose routing-1988-91 with 4.3L TBI engine (Federal without air pump)

     


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    Fig. Fig. 7: Vacuum hose routing-1988-91 with 4.3L TBI engine (Federal with air pump)

     


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    Fig. Fig. 8: Vacuum hose routing-1992-95 with 4.3L (VIN Z) engine

     


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    Fig. Fig. 9: Vacuum hose routing-1996 with 4.3L CSFI engine

     


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    Fig. Fig. 10: Vacuum hose routing-1992-95 with 4.3L (VIN W) engine, Federal

     


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    Fig. Fig. 11: Vacuum hose routing-1992-95 with 4.3L (VIN W) engine, California

     

     
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