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    1969 Chevrolet Biscayne 4.1L 1BL OHV 6cyl

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    Volvo 240/740/760/780/940/960 1990-1998

    VACUUM DIAGRAMS

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    See Figures 1, 2, 3, 4, 5, 6, 7, 8 and 9

    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 the 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.



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    Fig. Fig. 1: The vacuum diagram label on the underside of the hood



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    Fig. Fig. 2: Vacuum connection points-1990-92 700 series with Regina fuel injection system



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    Fig. Fig. 3: Vacuum connection points-1990-93 240 Series, 1990-92 700 Series, 1991 Coupe, and 1991-95 940 Series equipped with LH-Jetronic 2.4 or 3.1 fuel injection system



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    Fig. Fig. 4: Vacuum controlled components-1991-95 960 Series equipped with Motronic 1.8 fuel injection system



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    Fig. Fig. 5: Vacuum diagram-1993-95 850 Series equipped with LH-Jetronic 3.2 fuel injection system



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    Fig. Fig. 6: Vacuum controlled components-1994-95 850 Series with non-turbo engines equipped with Motronic 4.3 fuel injection system



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    Fig. Fig. 7: Vacuum controlled components-1994-95 850 Series with turbo engines equipped with Motronic 4.3 fuel injection system



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    Fig. Fig. 8: Vacuum controlled components-1996-98 960/S90/V90 models with Motronic 4.4 fuel injection system



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    Fig. Fig. 9: Vacuum controlled components-1996-98 850/C70/S70/V70 models with Motronic 4.4 fuel injection system

     
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